STRONTIUM 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.

STCC NUMBER

4963377

DESIGNATIONS

STANDARD INDUSTRIAL TRADE CLASSIFICATION NUMBER:52389

MOLECULAR FORMULA

SrCrO4
Cr-O4.Sr
Cr-H2-O4.Sr

ERG GUIDE NUMBER

171-SUBSTANCES (LOW TO MODERATE HAZARD)

SYNONYM REFERENCE

(HSDB , 2001; RTECS , 2001)

USES/FORMS/SOURCES

USES

Strontium chromate is used as a corrosion inhibitor in pigments and it controls the sulfate concentrations of solutions in electrochemical processes (HSDB , 2001).
Strontium chromate is used as a pigment in polyvinyl chloride resins, and also used in metal protective coatings to prevent corrosion (HSDB , 2001).
Strontium chromate is a component of chrome plating baths and is used in aluminum flake coatings (HSDB , 2001).
Strontium chlorate is used in pyrotechnics (AAR, 2000).

FORMS

Strontium chromate exists as a yellow powder or monoclinic yellow crystals (HSDB , 2001).

SOURCES

Strontium chloride and sodium chromate are used to manufacture strontium chromate (HSDB , 2001).
Strontium chromate is produced as a precipitate of strontium carbonate and sodium dichromate (Ashford, 1994).

-CLINICAL EFFECTS

GENERAL CLINICAL EFFECTS

Strontium chromate is irritating to the eyes, skin, and mucous membranes. Inhalation may cause respiratory tract irritation, difficulty breathing, and lung congestion. Burns and blindness may result from eye contact. Signs and symptoms following ingestion may include burns in the mouth, vomiting, stomach pain, intense thirst, dizziness, shock, and oliguria or anuria.

Chronic exposure can cause liver and kidney damage. Chronic dermal exposure can cause eczematous dermatitis with edema and skin ulceration.

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.

-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.

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).

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 vomiting.
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

ADULT

Strontium chromate is very toxic to humans. Fatal doses may be between 1 teaspoonful and 1 ounce (OHM/TADS , 2001).

Strontium chromate is toxic by ingestion (Lewis, 1997).

Strontium chromate is chronically toxic, due to the chromate content (ACGIH, 1991).

MAXIMUM TOLERATED EXPOSURE

ADULT

The maximum tolerated human exposure to this agent has not been delineated.

Carcinogenicity Ratings for CAS7789-06-2 :

ACGIH (American Conference of Governmental Industrial Hygienists, 2010): A2 ; Listed as: Strontium chromate, as Cr

A2 :Suspected Human Carcinogen: Human data are accepted as adequate in quality but are conflicting or insufficient to classify the agent as a confirmed human carcinogen; OR, the agent is carcinogenic in experimental animals at dose(s), by route(s) of exposure, at site(s), of histologic type(s), or by mechanism(s) considered relevant to worker exposure. The A2 is used primarily when there is limited evidence of carcinogenicity in humans and sufficient evidence of carcinogenicity in experimental animals with relevance to humans.

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: Strontium 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): Not Listed
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 CAS7789-06-2 (U.S. Environmental Protection Agency, 2011):

Not Listed

TOXICITY VALUES

References: RTECS, 2001
- LD50- (INTRATRACHEAL)RAT:
- LD50- (ORAL)RAT:
- TDLo- (INTRATRACHEAL)RAT:

-STANDARDS AND LABELS

WORKPLACE STANDARDS

ACGIH TLV Values for CAS7789-06-2 (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

Strontium chromate, as Cr

TLV:

TLV-TWA: 0.0005 mg/m(3)
TLV-STEL:
TLV-Ceiling:

Notations and Endnotes:

Carcinogenicity Category: A2
Codes: Not Listed
Definitions:

A2: Suspected Human Carcinogen: Human data are accepted as adequate in quality but are conflicting or insufficient to classify the agent as a confirmed human carcinogen; OR, the agent is carcinogenic in experimental animals at dose(s), by route(s) of exposure, at site(s), of histologic type(s), or by mechanism(s) considered relevant to worker exposure. The A2 is used primarily when there is limited evidence of carcinogenicity in humans and sufficient evidence of carcinogenicity in experimental animals with relevance to humans.

TLV Basis - Critical Effect(s): Cancer
Molecular Weight: 203.61

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 CAS7789-06-2 (AIHA, 2006):

Not Listed

NIOSH REL and IDLH Values for CAS7789-06-2 (National Institute for Occupational Safety and Health, 2007):

Not Listed

OSHA PEL Values for CAS7789-06-2 (U.S. Occupational Safety, and Health Administration (OSHA), 2010):

Not Listed

OSHA List of Highly Hazardous Chemicals, Toxics, and Reactives for CAS7789-06-2 (U.S. Occupational Safety and Health Administration, 2010):

Not Listed

ENVIRONMENTAL STANDARDS

EPA CERCLA, Hazardous Substances and Reportable Quantities for CAS7789-06-2 (U.S. Environmental Protection Agency, 2010):

Listed as: Strontium chromate
Final Reportable Quantity, in pounds (kilograms):

10 (4.54)

Additional Information:

EPA CERCLA, Hazardous Substances and Reportable Quantities, Radionuclides for CAS7789-06-2 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA RCRA Hazardous Waste Number for CAS7789-06-2 (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 CAS7789-06-2 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA SARA Title III, Community Right-to-Know for CAS7789-06-2 (40 CFR 372.65, 2006; 40 CFR 372.28, 2006):

Not Listed

DOT List of Marine Pollutants for CAS7789-06-2 (49 CFR 172.101 - App. B, 2005):

Not Listed

EPA TSCA Inventory for CAS7789-06-2 (EPA, 2005):

Listed as: Chromic acid (H2CrO4), strontium 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 CAS7789-06-2 (NFPA, 2002):

Not Listed

-HANDLING AND STORAGE

SUMMARY

INDUSTRIAL CHEMICALS

Protective clothing should be worn and room should be kept well-ventilated (OHM/TADS , 2001).

HANDLING

Protective clothing (rubber gloves, boots, safety goggles, and NIOSH approved respirator) should be worn. Avoid contact with skin or eyes (OHM/TADS , 2001).

STORAGE

CONTAINER

Containers should be kept tightly closed and away from food products, heat, and water (OHM/TADS , 2001).

ROOM/CABINET RECOMMENDATIONS

Room should be kept well ventilated (OHM/TADS , 2001).

INCOMPATIBILITIES

Strontium chromate is incompatible with water, acids, and bases (Pohanish & Greene, 1997).
Any contact with strong oxidizers such as chlorine, bromine, and fluorine must be avoided. Strontium chromate will react violently with these materials (Sittig, 1991).
Strontium chromate is incompatible with and readily oxidizable material, combustible, or organic material. Examples include paper, wood, sulfur, aluminum, or plastics (ILO , 1998).

-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.

Positive pressure self-contained breathing apparatus (SCBA) should be worn in any potential exposure situation with strontium chromate (HSDB , 2001).

Protection against both inhalation and absorption through the skin should be provided (OHM/TADS , 2001).

EYE/FACE PROTECTION

Contact with strontium chromate may cause burns to skin and eyes (HSDB , 2001).

Positive pressure self-contained breathing apparatus (SCBA) should be worn in any potential exposure situation with strontium chromate (HSDB , 2001).

RESPIRATORY PROTECTION

Positive pressure self-contained breathing apparatus (SCBA) should be worn in any potential exposure situation with strontium chromate (HSDB , 2001).

PROTECTIVE CLOTHING

CHEMICAL PROTECTIVE CLOTHING. Search results for CAS 7789-06-2.

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.
Wear positive pressure self-contained breathing apparatus (SCBA) when fighting fires involving strontium chromate (HSDB , 2001).

FLAMMABILITY CLASSIFICATION

NFPA Flammability Rating for CAS7789-06-2 (NFPA, 2002):

Not Listed

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 CAS7789-06-2 (NFPA, 2002):

Not Listed

For controlling small fires, dry chemical, CO2, water spray or regular foam should be used (HSDB , 2001).

For controlling larger fires, use water spray, fog, or regular foam (HSDB , 2001).

Fire extinguishing methods may include water, foam, dry chemical, or carbon dioxide (OHM/TADS , 2001).

COMBUSTION TOXICITY

When strontium chromate is exposed to fire, chromium oxides could be produced (OHM/TADS , 2001).
Strontium chromate will decompose and produce toxic fumes when burned (ILO , 1998).

EXPLOSION HAZARD

Containers of strontium chromate may explode when heated (HSDB , 2001).

Some containers of strontium chromate may polymerize (P) explosively when involved in a fire or heated (HSDB , 2001).

REACTIVITY HAZARD

Strontium chromate will have a violent reaction with hydrazine (ILO , 1998).

Strontium chromate is incompatible with any readily oxidizable material, combustible, or organic material. Examples include paper, wood, sulfur, aluminum, or plastics (ILO , 1998).

Any contact with strong oxidizers such as chlorine, bromine, and fluorine must be avoided. Strontium chromate will react violently with these materials (Sittig, 1991).

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 CAS7789-06-2 (AIHA, 2006):

Not Listed

DOE TEEL Values for CAS7789-06-2 (U.S. Department of Energy, Office of Emergency Management, 2010):

Not Listed

AEGL Values for CAS7789-06-2 (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 CAS7789-06-2 (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.
Any person not wearing protective equipment should be restricted from spill/leak area until clean-up is complete (Sittig, 1991).
If the spill occurs on land, solid strontium chromate should be covered with a plastic sheet so it will not dissolve in rain or fire fighting water (AAR, 2000).
If the spill occurs on water, sodium bisulfate (NaHSO3) should be added. The spill can be neutralized with agricultural lime (CaO), crushed limestone (CaCO3), or sodium bicarbonate (NaHCO3) (AAR, 2000).
Any flow from a spill should be contained; build dikes if necessary (OHM/TADS , 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.
If spill occurs in a small body of water, bottom pumps or underwater vacuum systems may be used (OHM/TADS , 2001).

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.
If spill occurs in a larger body of water, dredging may be needed to remove undissolved materials from the bottom of the lake/pond/steam (OHM/TADS , 2001).

-ENVIRONMENTAL HAZARD MANAGEMENT

POLLUTION HAZARD

There are no natural sources of strontium chromate (HSDB , 2001).

Strontium chromate presents a persistent water pollution hazard (OHM/TADS , 2001).

Strontium chromate pollution could threaten recreation, fisheries, and potable water supplies (OHM/TADS , 2001).

Please refer to Chromium, Chromium (III), and Chromium (VI) HazardText (R) documents for more information.

ENVIRONMENTAL FATE AND KINETICS

Please refer to Chromium, Chromium (III), and Chromium (VI) HazardText (R) documents for more information.

BIODEGRADATION

Please refer to Chromium, Chromium (III), and Chromium (VI) HazardText (R) documents for more information.

BIOACCUMULATION

PLANTS

AQUATIC
- Please refer to Chromium, Chromium (III), and Chromium (VI) HazardText (R) documents for more information.

BIOCONCENTRATION FACTOR

Strontium chromate has a positive bioconcentration in the food chain. Bioconcentration of up to 2000 fold is possible under constant exposure (OHM/TADS , 2001).
Chromium will concentrate in the food chain. The likely strontium accumulation factor is 150 for goldfish (CHRIS , 2001).
Please refer to Chromium, Chromium (III), and Chromium (VI) HazardText (R) documents for more information.

ENVIRONMENTAL TOXICITY

LC50 - (WATER) BLUEGILL SUNFISH: 36 ppm for 96H (estimated, based on chromic acid) (OHM/TADS , 2001)

The chronic aquatic toxicity limit for fish is 1.0 ppm, and 0.05 mg/L (as chromium) for other aquatic organisms (OHM/TADS , 2001).

Please refer to Chromium, Chromium (III), and Chromium (VI) HazardText (R) documents for more information.

-PHYSICAL/CHEMICAL PROPERTIES

MOLECULAR WEIGHT

203.61

DESCRIPTION/PHYSICAL STATE

Strontium chromate exists as a yellow powder or yellow, monoclinic crystals. It has rust-inhibiting and corrosion-resistant properties. It has good heat and light resistance and low reactivity in highly acid vehicles (HSDB, 2004).

SPECIFIC GRAVITY

OTHER TEMPERATURE AND/OR PRESSURE

3.895 (at 15 degrees C) (CHRIS, 2004)

TEMPERATURE AND/OR PRESSURE NOT LISTED

3.89 (Budavari, 2000; OHM/TADS , 2001)

FREEZING/MELTING POINT

MELTING POINT

Strontium chromate decomposes (ACGIH, 1991).

AUTOIGNITION TEMPERATURE

Strontium chromate is not flammable (CHRIS, 2004).

SOLUBILITY

IN WATER

Strontium chromate is insoluble in water (AAR, 2000).
Strontium chromate is slightly soluble in water (1.2 g/L at 15 degrees C) (ACGIH, 1991).
Strontium chromate is soluble in 840 parts cold water with about 5 parts boiling water (Budavari, 2000).
Strontium chromate is slightly soluble in water (1200 ppm at 15 degrees C) (OHM/TADS , 2001).

OTHER

Strontium chromate is soluble in ammonium salts and in hydrochloric, nitric, and acetic acids (ACGIH, 1991) Budavari, 2000).

OTHER/PHYSICAL

ODOR THRESHOLD

Strontium chromate is odorless (CHRIS, 2004).

-REFERENCES

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Information to evaluate chemical incidents

Information to evaluate chemical incidents

Information to evaluate chemical incidents