ZINC CHROMATE

Editor's Note: This material is not listed in the Emergency Response Guidebook. Based on the material's physical and chemical properties, toxicity, or chemical group, a guide has been assigned. For additional technical information, contact one of the emergency response telephone numbers listed under Public Safety Measures.

DESIGNATIONS

STANDARD INDUSTRIAL TRADE CLASSIFICATION NUMBER:52431

MOLECULAR FORMULA

ZnCrO4 CrH204.Zn (hydroxide)

ERG GUIDE NUMBER

171-SUBSTANCES (LOW TO MODERATE HAZARD)

SYNONYM REFERENCE

(Ariel GlobalView, 2001; Budavari, 2000; HSDB, 2001; Lewis, 2000; Lewis, 1998; RTECS, 2001)

USES/FORMS/SOURCES

USES

Zinc chromate is used as a pigment in paints, varnishes, rubber, and linoleum. It is also used to impart corrosion resistance to epoxy laminates and paint-primers, and as an ingredient in anti-freeze (ACGIH, 1991a; Budavari, 2000; ILO, 1998; OHM/TADS, 2001; Lewis, 1998; Sittig, 1991a).

FORMS

Zinc chromate is a lemon-yellow colored powder. It is odorless (Budavari, 2000; Lewis, 2000).

SOURCES

Zinc chromate is produced by the reaction of chromic acid with zinc oxide slurries or zinc hydroxide (ILO, 1998).
It is commercially available in the United States only in the form of basic zinc chromate (comprised of zinc oxide (71%), chromium oxide (17%), water and water-soluble salts) (HSDB, 2001).

SYNONYM EXPLANATION

Note: The title compound is a hexavalent chromium compound. Please refer to the "CHROMIUM VI" Document for more information.

-CLINICAL EFFECTS

GENERAL CLINICAL EFFECTS

Zinc chromate may be irritating to the eyes, skin, and mucous membranes. Signs and symptoms of exposure may include conjunctivitis, ulceration and perforation of the nasal septum, rhinitis, pharyngitis, cough, dyspnea, headache, dizziness, dermatitis, and skin ulceration. Abdominal pain, vomiting and diarrhea may occur following ingestion. Leukocytosis, leukopenia, monocytosis, and eosinophia have also be observed.

Studies of persons involved in the manufacture of zinc chromate pigments have shown an increased risk for cancer of the lungs, nasal cavity, and paranasal sinuses.

POTENTIAL HEALTH HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

Inhalation of material may be harmful.
Contact may cause burns to skin and eyes.
Inhalation of Asbestos dust may have a damaging effect on the lungs.
Fire may produce irritating, corrosive and/or toxic gases.
Some liquids produce vapors that may cause dizziness or suffocation.
Runoff from fire control may cause pollution.

ACUTE CLINICAL EFFECTS

Zinc chromate is a severe eye, nose, throat, and respiratory tract irritant (HSDB). Hexavalent chromates can be absorbed through the GI tract, lungs, or skin in toxic amounts EVEN FROM PRODUCTS WHICH HAVE BEEN PREVIOUSLY USED, such as during sanding of dried paints containing chromates.

CHRONIC CLINICAL EFFECTS

Both zinc and chromium have long half-lives in the body (approximately 2 or 3 years). It is thus likely that zinc chromate could exhibit CUMULATIVE TOXICITY. Chromium compounds, including zinc chromate, can cause ulcerative dermatitis, with deep, slow-healing lesions with exposure, or during sanding of dried chromate-containing paint (Engel & Calnan, 1963; Hal, 1944).

-MEDICAL TREATMENT

LIFE SUPPORT

Support respiratory and cardiovascular function.

SUMMARY

FIRST AID - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

Move victim to fresh air.
Call 911 or emergency medical service.
Give artificial respiration if victim is not breathing.
Administer oxygen if breathing is difficult.
Remove and isolate contaminated clothing and shoes.
In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes.
Ensure that medical personnel are aware of the material(s) involved, and take precautions to protect themselves.

FIRST AID

INHALATION EXPOSURE -

INHALATION: Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with an inhaled beta2-adrenergic agonist. Consider systemic corticosteroids in patients with significant bronchospasm.
If bronchospasm and wheezing occur, consider treatment with inhaled sympathomimetic agents.

DERMAL EXPOSURE -

DECONTAMINATION: Remove contaminated clothing and jewelry and place them in plastic bags. Wash exposed areas with soap and water for 10 to 15 minutes with gentle sponging to avoid skin breakdown. A physician may need to examine the area if irritation or pain persists (Burgess et al, 1999).
Treat dermal irritation or burns with standard topical therapy. Patients developing dermal hypersensitivity reactions may require treatment with systemic or topical corticosteroids or antihistamines.

EYE EXPOSURE -

DECONTAMINATION: Remove contact lenses and irrigate exposed eyes with copious amounts of room temperature 0.9% saline or water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist after 15 minutes of irrigation, the patient should be seen in a healthcare facility.

ORAL EXPOSURE -

Because of the potential for gastrointestinal tract irritation, DO NOT induce emesis.
DILUTION: If no respiratory compromise is present, administer milk or water as soon as possible after ingestion. Dilution may only be helpful if performed in the first seconds to minutes after ingestion. The ideal amount is unknown; no more than 8 ounces (240 mL) in adults and 4 ounces (120 mL) in children is recommended to minimize the risk of vomiting.

-RANGE OF TOXICITY

MINIMUM LETHAL EXPOSURE

The oral dose of chromium(VI) which has been estimated to cause death in humans is from one to three grams (HSDB, 2001).

PEDIATRIC

The lethal oral dose of chromium(VI) for a 14 year old boy was estimated at 10 mg/kg body weight (HSDB, 2001).

MAXIMUM TOLERATED EXPOSURE

ACUTE

After drinking a 5 ppm solution of chromium(VI) on an empty stomach, a volunteer noted mild nausea; this did not occur with solutions of 2.5-3.5 ppm (HSDB, 2001).
Exposure to zinc chromate through inhalation and/or ingestion can cause cough, redness of the eyes (in the case of exposure to the dust), abdominal pain, nausea, diarrhea and vomiting (CHRIS, 2001; (ILO , 1998).
Exposure to zinc chromate has been reported to cause dermatitis, though these instances are thought to be rare (HSDB, 2001).

CHRONIC

Bronchial carcinomas developed in three zinc chromate paint workers following 6 to 9 years occupational exposure to approximately 0.5-1.5 mg/m(3) zinc chromate dust (ACGIH, 1991).
A family drank water containing up to 25 ppm of chromium(VI) for three years with no adverse effects (HSDB, 2001).
Nausea was noted in a volunteer who drank a 10 ppm solution of chromium(VI) as his only fluid for a period of 15 days. A total of 235 ppm was ingested (HSDB, 2001).
Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

Carcinogenicity Ratings for CAS13530-65-9 :

ACGIH (American Conference of Governmental Industrial Hygienists, 2010): A1 ; Listed as: Zinc chromates, as Cr

A1 :Confirmed Human Carcinogen: The agent is carcinogenic to humans based on the weight of evidence from epidemiologic studies.

EPA (U.S. Environmental Protection Agency, 2011): Not Listed
IARC (International Agency for Research on Cancer (IARC), 2016; International Agency for Research on Cancer, 2015; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2010; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2010a; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2008; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2007; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2006; IARC, 2004): 1 ; Listed as: Zinc chromate

1 : The agent (mixture) is carcinogenic to humans. The exposure circumstance entails exposures that are carcinogenic to humans. This category is used when there is sufficient evidence of carcinogenicity in humans. Exceptionally, an agent (mixture) may be placed in this category when evidence of carcinogenicity in humans is less than sufficient but there is sufficient evidence of carcinogenicity in experimental animals and strong evidence in exposed humans that the agent (mixture) acts through a relevant mechanism of carcinogenicity.

NIOSH (National Institute for Occupational Safety and Health, 2007): Not Listed
MAK (DFG, 2002): Category 1 ; Listed as: Zinc chromate

Category 1 : Substances that cause cancer in man and can be assumed to make a significant contribution to cancer risk. Epidemiological studies provide adequate evidence of a positive correlation between the exposure of humans and the occurence of cancer. Limited epidemiological data can be substantiated by evidence that the substance causes cancer by a mode of action that is relevant to man.

NTP (U.S. Department of Health and Human Services, Public Health Service, National Toxicology Project ): Not Listed

TOXICITY AND RISK ASSESSMENT VALUES

EPA IRIS

EPA Risk Assessment Values for CAS13530-65-9 (U.S. Environmental Protection Agency, 2011):

Not Listed

TOXICITY VALUES

References: Lewis, 2000 RTECS, 2001)
- LDLo- (INTRAVENOUS)MOUSE:
- TCLo- (INHALATION)HUMAN:
- TDLo- (IMPLANT)RAT:
- TDLo- (SUBCUTANEOUS)RAT:

-STANDARDS AND LABELS

WORKPLACE STANDARDS

ACGIH TLV Values for CAS13530-65-9 (American Conference of Governmental Industrial Hygienists, 2010):

Editor's Note: The listed values are recommendations or guidelines developed by ACGIH(R) to assist in the control of health hazards. They should only be used, interpreted and applied by individuals trained in industrial hygiene. Before applying these values, it is imperative to read the introduction to each section in the current TLVs(R) and BEI(R) Book and become familiar with the constraints and limitations to their use. Always consult the Documentation of the TLVs(R) and BEIs(R) before applying these recommendations and guidelines.

Adopted Value

Zinc chromates, as Cr

TLV:

TLV-TWA: 0.01 mg/m(3)
TLV-STEL:
TLV-Ceiling:

Notations and Endnotes:

Carcinogenicity Category: A1
Codes: Not Listed
Definitions:

A1: Confirmed Human Carcinogen: The agent is carcinogenic to humans based on the weight of evidence from epidemiologic studies.

TLV Basis - Critical Effect(s): Nasal cancer
Molecular Weight: Varies

For gases and vapors, to convert the TLV from ppm to mg/m(3):

[(TLV in ppm)(gram molecular weight of substance)]/24.45

For gases and vapors, to convert the TLV from mg/m(3) to ppm:

[(TLV in mg/m(3))(24.45)]/gram molecular weight of substance

AIHA WEEL Values for CAS13530-65-9 (AIHA, 2006):

Not Listed

NIOSH REL and IDLH Values for CAS13530-65-9 (National Institute for Occupational Safety and Health, 2007):

Not Listed

OSHA PEL Values for CAS13530-65-9 (U.S. Occupational Safety, and Health Administration (OSHA), 2010):

Not Listed

OSHA List of Highly Hazardous Chemicals, Toxics, and Reactives for CAS13530-65-9 (U.S. Occupational Safety and Health Administration, 2010):

Not Listed

ENVIRONMENTAL STANDARDS

EPA CERCLA, Hazardous Substances and Reportable Quantities for CAS13530-65-9 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA CERCLA, Hazardous Substances and Reportable Quantities, Radionuclides for CAS13530-65-9 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA RCRA Hazardous Waste Number for CAS13530-65-9 (U.S. Environmental Protection Agency, 2010b):

Not Listed
Editor's Note: The D, F, and K series waste numbers and Appendix VIII to Part 261 -- Hazardous Constituents were not included. Please refer to 40 CFR Part 261.

EPA SARA Title III, Extremely Hazardous Substance List for CAS13530-65-9 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA SARA Title III, Community Right-to-Know for CAS13530-65-9 (40 CFR 372.65, 2006; 40 CFR 372.28, 2006):

Not Listed

DOT List of Marine Pollutants for CAS13530-65-9 (49 CFR 172.101 - App. B, 2005):

Not Listed

EPA TSCA Inventory for CAS13530-65-9 (EPA, 2005):

Listed as: Chromic acid (H2CrO4), zinc salt (1:1)

SHIPPING REGULATIONS

SURFACE

DOT -- Table of Hazardous Materials and Special Provisions (49 CFR 172.101, 2005):

Not Listed

ICAO International Shipping Name (ICAO, 2002):

Not Listed

LABELS

NFPA

NFPA Hazard Ratings for CAS13530-65-9 (NFPA, 2002):

Not Listed

-HANDLING AND STORAGE

SUMMARY

INDUSTRIAL CHEMICALS

Zinc chromate is a confirmed human carcinogen. Appropriate personal protective clothing and equipment should be used when working around this chemical, including gloves, goggles or face shield, and respirator (CHRIS, 2001; (Sittig, 1991).
Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

HANDLING

Avoid direct contact with zinc chromate; skin protection is required when handling this chemical (OHM/TADS, 2001).

If skin becomes contaminated with zinc chromate, workers should immediately wash area. Any contaminated clothing should be removed at the end of the work period (HSDB, 2001).

STORAGE

CONTAINER

Zinc chromate falls within the category of chromium(VI) compounds whose storage and shipping containers should bear the label: "DANGER! EXTREME HEALTH HAZARD. MAY CAUSE IRRITATION, RASH, OR EXTERNAL ULCERS INHALATION MAY CAUSE CANCER" (NIOSH , 1975).

ROOM/CABINET RECOMMENDATIONS

Zinc chromate should be stored at ambient temperatures (CHRIS, 2001; OHM/TADS, 2001).
This chemical should be stored in tightly closed containers in a cool, ventilated area and kept out of direct sunlight (HSDB, 2001).
Zinc chromate should only be handled or used in designated, marked, and regulated areas (Sittig, 1991).

INCOMPATIBILITIES

Zinc chromate can explosively decompose hydrazine (HSDB, 2001).
It is incompatable with the following: paper, wood, sulfur, aluminum, plastics (and similar combustible, organic or readily oxidizable materials), and strong oxidizers (HSDB, 2001).
It can attack clothing fibers (OHM/TADS, 2001).

-PERSONAL PROTECTION

SUMMARY

RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

Wear positive pressure self-contained breathing apparatus (SCBA).
Structural firefighters' protective clothing will only provide limited protection.

Zinc chromate is a carcinogen and should be handled with extreme caution. Appropriate personal protective clothing and equipment should be worn at all times when working with this chemical (HSDB, 2001; (Sittig, 1991).

In case of skin contamination, areas of exposure should be washed immediately (HSDB, 2001).

EYE/FACE PROTECTION

Exposure to zinc chromate dust may be irritating to the eyes. Chemical goggles or face shield should be worn when working around this chemical (CHRIS, 2001; HSDB, 2001).

RESPIRATORY PROTECTION

Zinc chromate dust is a respiratory tract irritant; proper respiratory protection should be used (CHRIS, 2001; HSDB, 2001).

Short term exposure can cause coughing or difficulty breathing. Chronic exposure has been associated with disintegration of the nasal septum and the development of lung cancer (CHRIS, 2001; (ILO , 1998; Sittig, 1991; Zenz, 1994).

In all situations where zinc is heated to the point of fume production, adequate ventilation must be provided (HSDB, 2001).

PROTECTIVE CLOTHING

CHEMICAL PROTECTIVE CLOTHING. Search results for CAS 13530-65-9.

Specific recommendations and test data for this chemical were not found in the available manufacturers' product literature. A complete list of consulted manufacturers and references is presented below.

-PHYSICAL HAZARDS

FIRE HAZARD

SUMMARY

Editor's Note: This material is not listed in the Emergency Response Guidebook. Based on the material's physical and chemical properties, toxicity, or chemical group, a guide has been assigned. For additional technical information, contact one of the emergency response telephone numbers listed under Public Safety Measures.
POTENTIAL FIRE OR EXPLOSION HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- Some may burn but none ignite readily.
- Containers may explode when heated.
- Some may be transported hot.
Zinc chromate is nonflammable (OHM/TADS, 2001; (Sittig, 1991).

FLAMMABILITY CLASSIFICATION

NFPA Flammability Rating for CAS13530-65-9 (NFPA, 2002):

Not Listed

INITIATING OR CONTRIBUTING PROPERTIES

Zinc chromate is nonflammable (OHM/TADS, 2001; (Sittig, 1991).

FIRE CONTROL/EXTINGUISHING AGENTS

SMALL FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

Dry chemical, CO2, water spray or regular foam.

LARGE FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

Water spray, fog or regular foam.
Move containers from fire area if you can do it without risk.
Do not scatter spilled material with high pressure water streams.
Dike fire-control water for later disposal.

TANK FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

Cool containers with flooding quantities of water until well after fire is out.
Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.
ALWAYS stay away from tanks engulfed in fire.

NFPA Extinguishing Methods for CAS13530-65-9 (NFPA, 2002):

Not Listed

Use fire extinguishing agent appropriate for the type of surrounding fire (HSDB, 2001).

COMBUSTION TOXICITY

Zinc chromate emits toxic vapors when burned to decomposition (OHM/TADS, 2001).

EXPLOSION HAZARD

Zinc chromate is a stable compound (OHM/TADS, 2001).

Contact with hydrazine can result in explosions (HSDB, 2001).

DUST/VAPOR HAZARD

Zinc chromate is a confirmed human carcinogen via inhalation route (Sittig, 1991).

Elevated incidence of lung cancers has been found in workers exposed to zinc chromates (ACGIH, 1991) HSDB, 2001; (Zenz, 1994).

Repeated exposure to zinc chromate dust can cause nose bleeds and nasal sores, followed by disintegration of the nasal septum (Sittig, 1991).

Fires involving calcium chromate may emit toxic chromate fumes (CHRIS, 2001).

Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

REACTIVITY HAZARD

Zinc chromate can explosively decompose hydrazine (HSDB, 2001).

It is incompatable with the following: paper, wood, sulfur, aluminum, plastics (and similar combustible, organic or readily oxidizable materials), and strong oxidizers (HSDB, 2001).

It can attack clothing fibers (OHM/TADS, 2001).

EVACUATION PROCEDURES

SUMMARY

Editor's Note: This material is not listed in the Table of Initial Isolation and Protective Action Distances.

SPILL - PUBLIC SAFETY EVACUATION DISTANCES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171(ERG, 2004)

Increase, in the downwind direction, as necessary, the isolation distance of at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids in all directions.

FIRE - PUBLIC SAFETY EVACUATION DISTANCES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

PUBLIC SAFETY MEASURES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)

CALL Emergency Response Telephone Number on Shipping Paper first. If Shipping Paper not available or no answer, refer to appropriate telephone number:

MEXICO:

SETIQ:

01-800-00-214-00 in the Mexican Republic;
For calls originating in Mexico City and the Metropolitan Area: 5559-1588;
For calls originating elsewhere, call: 011-52-555-559-1588.

CENACOM:

01-800-00-413-00 in the Mexican Republic;
For calls originating in Mexico City and the Metropolitan Area: 5550-1496, 5550-1552, 5550-1485, or 5550-4885;
For calls originating elsewhere, call: 011-52-555-550-1496, or 011-52-555-550-1552; 011-52-555-550-1485, or 011-52-555-550-4885.

ARGENTINA:

CIQUIME:

0-800-222-2933 in the Republic of Argentina;
For calls originating elsewhere, call: +54-11-4613-1100.

BRAZIL:

PRÓ-QUÍMICA:

0-800-118270 (Toll-free in Brazil);
For calls originating elsewhere, call: +55-11-232-1144 (Collect calls are accepted).

COLUMBIA:

CISPROQUIM:

01-800-091-6012 in Colombia;
For calls originating in Bogotá, Colombia, call: 288-6012;
For calls originating elsewhere, call: 011-57-1-288-6012.

CANADA:

CANUTEC:

613-996-6666 (Collect calls are accepted);
*666 cellular (in Canada only).

UNITED STATES:

CHEMTREC®:

1-800-424-9300 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
703-527-3887 for calls originating elsewhere (Collect calls are accepted).

CHEM-TEL, INC.:

1-800-255-3924 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
813-248-0585 for calls originating elsewhere (Collect calls are accepted).

INFOTRAC:

1-800-535-5053 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
352-323-3500 for calls originating elsewhere (Collect calls are accepted).

3E COMPANY:

1-800-451-8346 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
760-602-8703 for calls originating elsewhere (Collect calls are accepted).

NATIONAL RESPONSE CENTER (NRC):

1-800-424-8802 - (24 hours) (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
202-267-2675 for calls in the District of Columbia.

MILITARY SHIPMENTS:

703-697-0218 - Explosives/ammunition incidents (Collect calls are accepted);
1-800-851-8061 - All other dangerous goods incidents.

NATIONWIDE POISON CONTROL CENTER (United States only):

1-800-222-1222 (Toll-free in the U.S.).

For additional details see the section entitled "WHO TO CALL FOR ASSISTANCE" under the ERG Instructions.
As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
Keep unauthorized personnel away.
Stay upwind.

AIHA ERPG Values for CAS13530-65-9 (AIHA, 2006):

Not Listed

DOE TEEL Values for CAS13530-65-9 (U.S. Department of Energy, Office of Emergency Management, 2010):

Listed as Pigment yellow 36 (Zinc chromate)
TEEL-0 (units = mg/m3): 0.0174
TEEL-1 (units = mg/m3): 0.4
TEEL-2 (units = mg/m3): 2.5
TEEL-3 (units = mg/m3): 52.3
Definitions:

TEEL-0: The threshold concentration below which most people will experience no adverse health effects.
TEEL-1: The airborne concentration (expressed as ppm [parts per million] or mg/m(3) [milligrams per cubic meter]) of a substance above which it is predicted that the general population, including susceptible individuals, could experience notable discomfort, irritation, or certain asymptomatic, nonsensory effects. However, these effects are not disabling and are transient and reversible upon cessation of exposure.
TEEL-2: The airborne concentration (expressed as ppm or mg/m(3)) of a substance above which it is predicted that the general population, including susceptible individuals, could experience irreversible or other serious, long-lasting, adverse health effects or an impaired ability to escape.
TEEL-3: The airborne concentration (expressed as ppm or mg/m(3)) of a substance above which it is predicted that the general population, including susceptible individuals, could experience life-threatening adverse health effects or death.

AEGL Values for CAS13530-65-9 (National Research Council, 2010; National Research Council, 2009; National Research Council, 2008; National Research Council, 2007; NRC, 2001; NRC, 2002; NRC, 2003; NRC, 2004; NRC, 2004; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; United States Environmental Protection Agency Office of Pollution Prevention and Toxics, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; 62 FR 58840, 1997; 65 FR 14186, 2000; 65 FR 39264, 2000; 65 FR 77866, 2000; 66 FR 21940, 2001; 67 FR 7164, 2002; 68 FR 42710, 2003; 69 FR 54144, 2004):

Not Listed

NIOSH IDLH Values for CAS13530-65-9 (National Institute for Occupational Safety and Health, 2007):

Not Listed

CONTAINMENT/WASTE TREATMENT OPTIONS

SUMMARY

SPILL OR LEAK PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- Do not touch or walk through spilled material.
- Stop leak if you can do it without risk.
- Prevent dust cloud.
- Avoid inhalation of asbestos dust.
RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- Wear positive pressure self-contained breathing apparatus (SCBA).
- Structural firefighters' protective clothing will only provide limited protection.
Consult all existing state and federal regulations regarding hazardous waste disposal prior to disposing of zinc chromate and/or materials contaminated with it (HSDB, 2001).

SMALL LEAK/SPILL

SMALL SPILL PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- Take up with sand or other non-combustible absorbent material and place into containers for later disposal.
SMALL DRY SPILL PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- With clean shovel place material into clean, dry container and cover loosely; move containers from spill area.
Restrict access to area of zinc chromate spill to those wearing appropriate protective equipment until clean-up is complete (Sittig, 1991).
Wet methods of cleaning up solid zinc chromate spills are preferable, though vacuum cleaning is an acceptable alternative. Spills should be removed immediately to prevent generation of dusts (HSDB, 2001; (ILO , 1998).

LARGE LEAK/SPILL

LARGE SPILL PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 171 (ERG, 2004)
- Dike far ahead of liquid spill for later disposal.
- Cover powder spill with plastic sheet or tarp to minimize spreading.
- Prevent entry into waterways, sewers, basements or confined areas.
Restrict access to area of zinc chromate spill to those wearing appropriate protective equipment until clean-up in complete (Sittig, 1991).

WASTE TREATMENT OPTIONS

RECYCLING/RECLAMATION

Route wastes to a metal reclamation facility (OHM/TADS, 2001).
Waste management activities associated with material disposition are unique to individual situations. Proper waste characterization and decisions regarding waste management should be coordinated with the appropriate local, state, or federal authorities to ensure compliance with all applicable rules and regulations.

CHEMICAL TREATMENT

Ferric salt and sodium hydrogen carbonate can be added to zinc chromate contaminated waters; ferric chromate will precipitate out and can then be dredged. Lime can then be added to precipitate the zinc (OHM/TADS, 2001).

PHYSICAL TREATMENT

Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

-ENVIRONMENTAL HAZARD MANAGEMENT

POLLUTION HAZARD

Contamination of water sources results from the use of chromates as corrosion inhibitors (HSDB, 2001).

In waters contaminated with zinc chromate, zinc will eventually precipitate as a basic salt but chromates can remain in solution indefinitely (OHM/TADS, 2001).

Sewage organisms may be inhibited by as little as 1 ppm of zinc. Concentrations greater than 20 mg/L were found to have a toxic effect on activated sludge (OHM/TADS, 2001).

Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

ENVIRONMENTAL FATE AND KINETICS

Chromium is removed from the air through wet and dry deposition. The precipitated chromium from the air enters surface waters and soil (HSDB, 2001).

WATER

SURFACE WATER
- Hexavalent chromium rarely occurs in nature, apart from anthopogenic sources, because it is readily reduced by oxidizable organic matter. However, once in water, hexavalent chromium frequently remains unchanged because of low concentration of reducing matter (HSDB, 2001).
- In waters contaminated with zinc chromate, zinc will eventually precipitate as a basic salt but chromates can remain in solution indefinitely (OHM/TADS, 2001).
- Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

SOIL

TERRESTRIAL
- Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

OTHER

OTHER
- Zinc has been seen to adsorb to river sediment (OHM/TADS, 2001).
- Soil pH is a major factor in zinc uptake; high pH, organic chelates and phosphate reduce mobility (OHM/TADS, 2001).
- Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

BIODEGRADATION

Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

BIOACCUMULATION

FISH

Zinc has been found to concentrate in aquatic life (OHM/TADS, 2001).

PLANTS

AQUATIC
- Zinc has been found to concentrate in aquatic life (OHM/TADS, 2001).
- Zinc has been found to concentrate in plants (OHM/TADS, 2001).

MAMMALS

Zinc has been found to concentrate in milk, and can pass from water to forage to cow's milk (OHM/TADS, 2001).

BIOCONCENTRATION FACTOR

Refer to the "CHROMIUM VI" HAZARDTEXT(R) Management for more information.

ENVIRONMENTAL TOXICITY

(All data are from OHM/TADS, 2001:)

Fresh water toxicity:

LC - (WATER) BLUEGILL SUNFISH: 10.1-12.5 ppm (as Zn) for 96H, 18 and 30 degrees C, hard
LC - (WATER) EELS: 0.65 ppm (as Zn) for 12H
LC - (WATER) FISH, Mature: 0.3 ppm (as Zn), soft
LC - (WATER) FISH: 0.3-0.7 ppm (as Zn)
LC - (WATER) FISH: 0.4 ppm (as Zn) for 144H, soft
LC - (WATER) FISH: 5-15 ppm (as Zn)
LC - (WATER) FISH: 8 ppm (as Zn) for 8H, soft
LC - (WATER) FISH: 15 ppm (as Zn) for 8H
LC - (WATER) FISH: 20 ppm (as Zn) for <6H, soft
LC - (WATER) FISH: 200 ppm (as Zn) for 3.5H, soft
LC - (WATER) GUPPY: 0.13 ppm (as Zn)
LC - (WATER) MAY FLY, Nymphs: 0.3 ppm (as Zn)
LC - (WATER) MICROLIFE: 1-10 ppm (as Zn)
LC - (WATER) MIXED WARMWATER FISH: 0.5 ppm (as Zn)
LC - (WATER) RAINBOW FRY: 3 ppm (as Zn) for 48H
LC - (WATER) RAINBOW TROUT, Fingerlings: 0.13 ppm (as Zn) for 12-24H
LC - (WATER) RAINBOW TROUT, Fingerling: 0.5 ppm (as Zn) for 72H, soft
LC - (WATER) RAINBOW TROUT: 0.5 ppm (as Zn) for 72H, soft
LC - (WATER) RAINBOW TROUT, Fingerlings: 3 ppm (as Zn) for 8H, soft
LC - (WATER) RAINBOW TROUT: 4 ppm (as Zn) for 72H, hard
LC - (WATER) RAINBOW TROUT: 25-50 ppm (as Zn) for 2H, tap water
LC - (WATER) SALMON FRY: 0.15 ppm (as Zn)
LC - (WATER) SALMO SALAR: 0.6 ppm (as Zn), incipient
LC - (WATER) STICKLEBACKS: 0.3 ppm (as Zn)
LC - (WATER) STICKLEBACKS: 1.0 ppm (as Zn) for 24H, soft
LC - (WATER) TROUT, Ova and young: 0.01 ppm (as Zn)
LC - (WATER) TROUT, Young: 0.01-0.4 ppm (as Zn)
LC - (WATER) TROUT: 0.15 ppm (as Zn)
LC - (WATER) TROUT, Young: 6 ppm (as Zn) for 48H
LC - (WATER) TROUT: 8-11 ppm (as Zn)
LC0 - (WATER) STRIPED BASS, Larvae: 0.05 ppm (as Zn) for 24H, static
LC0 - (WATER) STRIPED BASS, Larvae: 0.01 ppm (as Zn) for 48-96H, static
LC0 - (WATER) STRIPED BASS, Fingerling: 0.05 ppm (as Zn) for 24-96H, static
LC50 - (WATER) ACRONEURIA: 16 ppm (as Zn) for 336H, static-sulfate
LC50 - (WATER) BLUEGILL: 3.3 ppm (as Zn) for 96H, static, chloride
LC50 - (WATER) BROOK TROUT, Juvenile: 0.96 ppm (as Zn) for 14D, flowthrough, sulfate, soft
LC50 - (WATER) BROWN TROUT, Juvenile: 0.64 ppm (as Zn) for 14D, flowthrough, sulfate, soft
LC50 - (WATER) CUTTHROAT TROUT, Juvenile: 0.67 ppm (as Zn) for 14D, flowthrough, sulfate, soft
LC50 - (WATER) EPHEMERELLA: 32 ppm (as Zn) for 264H, static, sulfate
LC50 - (WATER) GUPPY: 0.56 ppm (as Zn) for 96H, soft, 24 degrees C
LC50 - (WATER) NITZSCHIA LINEARIES: 4.3 ppm (as Zn) for 120H, static-chloride
LC50 - (WATER) PHOXINUS: 3.2 ppm (as Zn) for 96H, continuous flow
LC50 - (WATER) PHYSAHETEROSTROPHA: 0.98 ppm (as Zn) for 96H, static- chloride
LC50 - (WATER) RAINBOW TROUT: 0.24-0.56 ppm (as Zn) for 96H, soft, 14-15 degrees C
LC50 - (WATER) RAINBOW TROUT: 0.41-0.83 ppm (as Zn) for 96H, soft, 6-10 degrees C
LC50 - (WATER) RAINBOW TROUT, Juvenile: 7.2 ppm (as Zn) for 96H, flowthrough, sufate, hard
LC50 - (WATER) RAINBOW TROUT, Juvenile: 0.43 (as Zn) for 96H, flowthrough, sulfate, soft
LC50 - (WATER) RAINBOW TROUT, Juvenile: 1.2 ppm (as Zn) for 96H, flowthrough, sulfate, hard
LC50 - (WATER) RAINBOW TROUT, Juvenile: 0.71 ppm (as Zn) for 14D, flowthrough, sulfate, soft
LC50 - (WATER) RAINBOW TROUT: 4.76 ppm (as Zn) for 48H, flowthrough, sulfate, hard
LC50 - (WATER) RAINBOW TROUT: 4.0 ppm (as Zn) for 48H, static
LC50 - (WATER) SOCKEYE SALMON: 1.1 ppm (as Zn) for 96H, soft, 12 degrees C
LC50 - (WATER) STEELHEAD TROUT: 0.11 ppm (as Zn) for 96H, soft, 12 degrees C
LC50 - (WATER) STRIPED BASS, Larvae: 0.5 ppm (as Zn) for 24H, static
LC50 - (WATER) STRIPED BASS, Larvae: 0.1 ppm (as Zn) for 48-96H, static
LC50 - (WATER) STRIPED BASS, Fingerling: 0.2 ppm (as Zn) for 24H, static
LC50 - (WATER) TETRANYMENA PYRIFORMIS (PROFOZOA): 6.67 ppm (as Zn) for 96H, static, distilled water
LC50 - (WATER) ZEBRA FISH, Embryos: 6714 ppm (as Zn) for 24H, static, distilled
LC50 - (WATER) ZEBRA FISH, Embryos: 136 ppm (as Zn) for 48H, static, distilled
LC50 - (WATER) ZEBRA FISH, Embryos: 19 ppm (as Zn) for 72H, static, distilled
LC100 - (WATER) STRIPED BASS, Larvae: >0.5 ppm (as Zn) for 24H, static
LC100 - (WATER) STRIPED BASS, Larvae: 0.3 ppm (as Zn) for 48-96H, static
LC100 - (WATER) STRIPED BASS, Fingerling: 0.1 ppm (as Zn) for 48-96H, static
LC100 - (WATER) STRIPED BASS, Fingerling: 0.25 ppm (as Zn) for 24H, static
LC100 - (WATER) STRIPED BASS, Fingerling: 0.2 ppm (as Zn) for 48-96H, static
TC - (WATER) PHOXINUS: 0.2 ppm (as Zn) for 270D, flowthrough, nitrate -- vertebral damage
TC - (WATER) RAINBOW TROUT, Eggs to maturity: 0.32- 0.54 ppm (as Zn) for 2Y, flowthrough, sulfate, hard -- affected growth and mortality
TC - (WATER) RAINBOW TROUT, Eggs to maturity: 0.14- 0.26 ppm (as Zn) for 2Y, flowthrough, sulfate, soft -- affected growth and mortality
TC - (WATER) RAINBOW TROUT, Juvenile: 0.5 ppm (as Zn) for >1Y, flowthrough, sulfate, hard -- affected growth and mortality
TC - (WATER) RAINBOW TROUT: 0.0056 ppm, soft -- avoidance
TC - (WATER) SNAIL: 1 ppm, natural water
TC - (WATER) SNAIL: 0.05 to 0.1 ppm, distilled water
TC - (WATER) SNAIL: 0.79 to 1.27 ppm for 96H, pond water, soft, 20 degrees C
THRESHOLD - (WATER) DAPHNIA MAGNA: 1.8 ppm (as Zn)
TLM - (WATER) AMERICAN EEL: 21.6 ppm (as Zn) for 24H, Hudson river water
TLM - (WATER) AMERICAN EEL: 20.0 ppm (as Zn) for 48H, Hudson river water
TLM - (WATER) AMERICAN EEL: 14.6 ppm (as Zn) for 96H, Hudson river water
TLM - (WATER) ATLANTIC SALMON: 4 ppm (as Zn) for 48H, static
TLM - (WATER) BANDED KILLIFISH: 22.6 ppm (as Zn) for 24H, Hudson river water
TLM - (WATER) BANDED KILLIFISH: 20.7 ppm (as Zn) for 48H, Hudson river water
TLM - (WATER) BANDED KILLIFISH: 19.1 ppm (as Zn) for 96H, Hudson river water
TLM - (WATER) BLUEGILL: 6.75 ppm (as Zn) for 24H, 25 degrees C, soft
TLM - (WATER) BLUEGILL: 5.46 ppm (as Zn) for 48H, 25 degrees C, soft
TLM - (WATER) BLUEGILL: 5.46 ppm (as Zn) for 96H, 25 degrees C, soft
TLM - (WATER) BLUEGILL: 7.95 ppm (as Zn) for 24H, 15 degrees C, soft
TLM - (WATER) BLUEGILL: 6.14 ppm (as Zn) for 48H, 15 degrees C, soft
TLM - (WATER) BLUEGILL: 6.44 ppm (as Zn) for 96H, 15 degrees C, soft
TLM - (WATER) BLUEGILL: 2.86 ppm (as Zn), 18 degrees C, soft
TLM - (WATER) BLUEGILL: 0.9 ppm (as Zn), 30 degrees C, soft
TLM - (WATER) BLUEGILL: 6.6 ppm (as Zn), 18 degrees C, hard
TLM - (WATER) BLUEGILL: 6.18 ppm (as Zn), 30 degrees C, hard
TLM - (WATER) BLUEGILL SUNFISH: 1.9-3.6 ppm for 96H, 30 degrees C, soft
TLM - (WATER) BLUEGILL SUNFISH: 3.5 ppm (as Zn) for 96H, 30 degrees C, soft
TLM - (WATER) BLUEGILL SUNFISH: 3.5 ppm (as Zn) for 96H, distilled water, 20 degrees C
TLM - (WATER) BLUEGILL SUNFISH: 2.9-3.8 for 96H, 20 degrees C, soft
TLM - (WATER) BLUEGILL SUNFISH: 3.5 ppm (as Zn) for 96H, 30 degrees C, soft
TLM - (WATER) BLUEGILL SUNFISH: 12.5-12.9 ppm (as Zn) for 96H, 20 and 30 degrees C, hard
TLM - (WATER) BLUEGILL SUNFISH: 4.2 ppm (as Zn) for 96H, 20 degrees C, soft
TLM - (WATER) BLUEGILL SUNFISH: 8.02 ppm (as Zn) for 96H, distilled water
TLM - (WATER) CARP: 14.3 ppm (as Zn) for 24H, Hudson river water
TLM - (WATER) CARP: 9.3 ppm (as Zn) for 48H, Hudson river water
TLM - (WATER) CARP: 7.8 ppm (as Zn) for 96H, Hudson river water
TLM - (WATER) CUTTHROAT TROUT: 0.62 ppm (as Zn) for 24H, static
TLM - (WATER) CUTTHROAT TROUT: 0.27 ppm (as Zn) for 48H, static
TLM - (WATER) CUTTHROAT TROUT: 0.09 ppm (as Zn) for 96H, static
TLM - (WATER) CUTTHROAT TROUT: 0.92 ppm (as Zn) for 24H, flowing water
TLM - (WATER) CUTTHROAT TROUT: 0.42 ppm for 0.24H, flowing water
TLM - (WATER) FATHEAD MINNOW: 0.89 ppm (as Zn) for 24H, 25 degrees C, soft
TLM - (WATER) FATHEAD MINNOW: 0.77 ppm (as Zn) for 48H, 25 degrees C, soft
TLM - (WATER) FATHEAD MINNOW: 0.77 ppm (as Zn) for 96H, 25 degrees, soft
TLM - (WATER) FATHEAD MINNOW: 3.21 ppm (as Zn) for 24H, 15 degrees C, soft
TLM - (WATER) FATHEAD MINNOW: 2.55 ppm (as Zn) for 48H, 15 degrees C, soft
TLM - (WATER) FATHEAD MINNOW: 2.55 ppm (as Zn) for 96H, 15 degrees C, soft
TLM - (WATER) FATHEAD MINNOW: 2.70 ppm (as Zn) for 48H, 15 degrees C, soft
TLM - (WATER) FATHEAD MINNOW: 2.33 ppm (as Zn) for 96H, 15 degrees C, soft
TLM - (WATER) FATHEAD MINNOW: 7.6 ppm for 96H
TLM - (WATER) FATHEAD MINNOW: 9.2 ppm for 96H, continuous flow
TLM - (WATER) FISH: 2 ppm (as Zn), soft
TLM - (WATER) HELISOMA CAMPANULATURM: 3.03 ppm (as Zn) for 96H, 13 degrees C, hard
TLM - (WATER) HELISOMA CAMPANULATURM: 0.87 ppm (as Zn) for 96H, 13 degrees C, soft
TLM - (WATER) P. ROSEOLA: 18-65 ppm (as Cr) for 24H, 5-35 degrees C, respectively
TLM - (WATER) P. ROSEOLA: 9.1-31 ppm (as Cr) for 48H, 5-35 degrees C, respectively
TLM - (WATER) P. ROSEOLA: 5.3-16 (as Cr) for 72H, 5-35 degrees C, respectively
TLM - (WATER) P. ROSEOLA: 4.4-12 (As Cr) for 96H, 5-30 degrees C, respectively
TLM - (WATER) PLATYFISH: 12 ppm for 96H
TLM - (WATER) PUMPKIN SEED: 25.2 ppm (as Zn) for 24H, Hudson river water
TLM - (WATER) PUMPKIN SEED: 21.8 ppm (as Zn) for 48H, Hudson river water
TLM - (WATER) PUMPKIN SEED: 200 ppm (as Zn) for 96H, Hudson river water
TLM - (WATER) SNAIL: 0.62-0.78 ppm for 96H, soft, 30 degrees C
TLM - (WATER) SNAIL: 2.67-5.57 ppm for 96H, hard, 20 degrees C
TLM - (WATER) SNAIL: 2.36-6.36 ppm for 96H, hard, 20 degrees C
TLM - (WATER) STRIPED BASS: 11.2 ppm (as Zn) for 24H, Hudson river water
TLM - (WATER) STRIPED BASS: 10.0 ppm (as Zn) for 48H, Hudson river water
TLM - (WATER) STRIPED BASS: 6.7 ppm (as Zn) for 96H, Hudson river water
TLM - (WATER) TUBIFIED WORMS: 46 ppm for 24H, at pH 7.5
TLM - (WATER) WHITE PERCH: 13.6 ppm (as Zn) for 24H, Hudson river water
TLM - (WATER) WHITE PERCH: 10.2 ppm (as Zn) for 48H, Hudson river water
TLM - (WATER) WHITE PERCH: 14.3 ppm (as Zn) for 96H, Hudson river water

Saltwater toxicity:

LC50 - (WATER) ARMED BULLHEAD: 33-100 ppm (as Cr) for 48H, aerated
LC50 - (WATER) BROWN SHRIMP: 100 ppm (as Cr) for 48H, aerated
LC50 - (WATER) COCKLE: 100-330 ppm (as Cr) for 48H, aerated
LC50 - (WATER) COCKLE: 275.5 ppm (as Zn) for 48H, sulfate salt, aerated
LC50 - (WATER) CRAB: 14.5 ppm (as Zn) for 48H, sulfate salt, aerated
LC50 - (WATER) CRAB, Adult: 14.5 ppm (as Zn) for 48H, static, sulfate
LC50 - (WATER) CRAB, Larvae: 1 ppm (as Zn) for 48H, static, sulfate
LC - (WATER) FUNDULUS HETEROCLITUS: 157 ppm (as Zn) for 24H
LC - (WATER) MUMMICHOG: 157-180 (as Zn) for 24-48H,
20 degrees C
LC50 - (WATER) OYSTER: 116.5 ppm (as Zn) for 48H, sulfate salt, aerated
LC50 - (WATER) PRAWN: 9.5 ppm (as Zn) for 48H, sulfate salt, aerated
LC50 - (WATER) SHRIMP: 110 ppm (as Zn) for 48H, sulfate salt, aerated
LC50 - (WATER) STARFISH: 33-100 ppm (as Cr) for 48H, aerated

-PHYSICAL/CHEMICAL PROPERTIES

MOLECULAR WEIGHT

181.38 183.40 (hydroxide)

DESCRIPTION/PHYSICAL STATE

Zinc chromate is usually found as lemon-yellow crystalline powder (HSDB, 2001 ; (NTP , 1998). In water, it appears yellow to green in color (OHM/TADS, 2001).

Hexavalent chromium (chromate state) is acidic (HSDB, 2001).

SPECIFIC GRAVITY

OTHER TEMPERATURE AND/OR PRESSURE

3.43 (at 20 degrees C) (CHRIS, 2001)

TEMPERATURE AND/OR PRESSURE NOT LISTED

3.40 for zinc chromate (HSDB, 2001; OHM/TADS, 2001)

DENSITY

TEMPERATURE AND/OR PRESSURE NOT LISTED

~3.4 g/cc (ACGIH, 1991)

FREEZING/MELTING POINT

MELTING POINT

316 degrees C (Lewis, 2000a)

FLASH POINT

Zinc chromate is not flammable (CHRIS, 2001).

SOLUBILITY

IN WATER

Zinc chromate is insoluble in water (Lewis, 1998).
Zinc chromate is water soluble (Lewis, 2000).
It is soluble in hot water and insoluble in cold water (HSDB, 2001; (NTP , 1998).
It is sparingly or slightly soluble in water (ACGIH, 1991; Budavari, 2000) HSDB, 2001; OHM/TADS, 2001).

OTHER

Zinc chromate is soluble in acids (HSDB, 2001; (Lewis, 1998; NTP , 1998).
It is soluble in dilute acids, including acetic acid (Budavari, 2000).
Zinc chromate is insoluble in acetone (HSDB, 2001; (NTP , 1998).
It is soluble in ammonia (HSDB, 2001; (NTP , 1998).

OTHER/PHYSICAL

ODOR THRESHOLD

Zinc chromate is odorless (Budavari, 2000) CHRIS, 2001; HSDB, 2001).

-REFERENCES

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Information to evaluate chemical incidents

Information to evaluate chemical incidents

Information to evaluate chemical incidents