BORIC ACID

It is used in weatherproofing wood, fireproofing fabrics and the manufacture of cements, glass and enamels. It can be used in hardening steel, as an astringent, antiseptic, in cosmetic powders and as a buffer in eye lotions (Bingham et al, 2001) HSDB; (Budavari, 1996; Lewis, 1993). It is also used as an insecticide for cockroaches and black carpet beetles (Budavari, 1996).

FORMS

BORIC ACID is a colorless, odorless crystalline, white granular, or powder solid and is fairly soluble in water (1 gm/4 mL boiling), where it forms a somewhat acidic solution (pH 5.1) (HSDB; (Lewis, 1993; Budavari, 1996).

SOURCES

Boric acid is produced by reaction with sulfuric acid to borax, sodium or calcium containing ore It is then concentrated, crystalized and dried (Bingham et al, 2001).

-CLINICAL EFFECTS

GENERAL CLINICAL EFFECTS

Editor's Note: An ERG guide with information appropriate to this material does not exist.

ACUTE CLINICAL EFFECTS

WITH POISONING/EXPOSURE

Boric acid can be absorbed in toxic amounts through the gastrointestinal tract, by inhalation, or through broken skin. There have been many fatalities from boric acid in household products, including infants who had boric acid applied to diaper rash (Barlow & Sullivan, 1982).
Boric acid is a member of the BORATE family, a series of compounds which tend to have similar toxic effects. It is an eye, skin, and respiratory tract irritant (Garabrant, 1984; Lewis, 1993), but does not penetrate intact skin.
It can be quite toxic when taken orally; however, ingestion of large amounts has sometimes resulted only in spontaneous vomiting (Linden et al, 1986). Symptoms of nausea, vomiting, and diarrhea can be produced by any route of exposure, followed by lowered body temperature, red skin rash, headache, restlessness, weakness, kidney or liver damage, and death from circulatory collapse or shock. Cyanosis, delirium, convulsions and coma can also occur (HSDB). Cases of acute human poisonings have involved gastrointestinal disturbances (73%), central nervous system effects (67%), and skin lesions (76%), but more recent poisonings have been milder (Clayton & Clayton, 1994).
A single ingestion of 30 grams was fatal; initial symptoms included vomiting and diarrhea; death was due to cardiac insufficiency (Ishii et al, 1993). However, single ingestions of 10 grams by an infant and 297 grams by an adult have been survived (Linden et al, 1986).

CHRONIC CLINICAL EFFECTS

WITH POISONING/EXPOSURE

Boric acid and borates can ACCUMULATE in the body with repeated exposure. They are found in high levels in the brain and accumulate in the bone (HSDB). In an occupational study, workers manufacturing borax (sodium borate) had eczema (ILO, 1983), which may have been a sign of systemic uptake. Chronic accumulation of boron-containing compounds is called borism; other symptoms are skin eruptions and gastrointestinal disturbances (Budavari, 1996).

-RANGE OF TOXICITY

MAXIMUM TOLERATED EXPOSURE

Carcinogenicity Ratings for CAS10043-35-3 :

ACGIH (American Conference of Governmental Industrial Hygienists, 2010): A4 ; Listed as: Borate compounds, inorganic

A4 :Not Classifiable as a Human Carcinogen: Agents which cause concern that they could be carcinogenic for humans but which cannot be assessed conclusively because of a lack of data. In vitro or animal studies do not provide indications of carcinogenicity which are sufficient to classify the agent into one of the other categories.

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): Not Listed
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 CAS10043-35-3 (U.S. Environmental Protection Agency, 2011):

Not Listed

-STANDARDS AND LABELS

WORKPLACE STANDARDS

ACGIH TLV Values for CAS10043-35-3 (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

Borate compounds, inorganic

TLV:

TLV-TWA: 2 mg/m(3)
TLV-STEL: 6 mg/m(3)
TLV-Ceiling:

Notations and Endnotes:

Carcinogenicity Category: A4
Codes: I
Definitions:

A4: Not Classifiable as a Human Carcinogen: Agents which cause concern that they could be carcinogenic for humans but which cannot be assessed conclusively because of a lack of data. In vitro or animal studies do not provide indications of carcinogenicity which are sufficient to classify the agent into one of the other categories.
I: Inhalable fraction; see Appendix C, paragraph A (of TLV booklet).

TLV Basis - Critical Effect(s): URT irr
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 CAS10043-35-3 (AIHA, 2006):

Not Listed

NIOSH REL and IDLH Values for CAS10043-35-3 (National Institute for Occupational Safety and Health, 2007):

Not Listed

OSHA PEL Values for CAS10043-35-3 (U.S. Occupational Safety, and Health Administration (OSHA), 2010):

Not Listed

OSHA List of Highly Hazardous Chemicals, Toxics, and Reactives for CAS10043-35-3 (U.S. Occupational Safety and Health Administration, 2010):

Not Listed

ENVIRONMENTAL STANDARDS

EPA CERCLA, Hazardous Substances and Reportable Quantities for CAS10043-35-3 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA CERCLA, Hazardous Substances and Reportable Quantities, Radionuclides for CAS10043-35-3 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA RCRA Hazardous Waste Number for CAS10043-35-3 (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 CAS10043-35-3 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA SARA Title III, Community Right-to-Know for CAS10043-35-3 (40 CFR 372.65, 2006; 40 CFR 372.28, 2006):

Not Listed

DOT List of Marine Pollutants for CAS10043-35-3 (49 CFR 172.101 - App. B, 2005):

Not Listed

EPA TSCA Inventory for CAS10043-35-3 (EPA, 2005):

Listed as: Boric acid (H3BO3)

LABELS

NFPA

NFPA Hazard Ratings for CAS10043-35-3 (NFPA, 2002):

Not Listed

-PERSONAL PROTECTION

SUMMARY

Editor's Note: An ERG guide with information appropriate to this material does not exist.

PROTECTIVE CLOTHING

CHEMICAL PROTECTIVE CLOTHING. Search results for CAS 10043-35-3.

All data are compiled from published sources and are NOT recommended specifically by Truven Health Analytics. The appearance of specific manufacturers or products in this section does not represent an endorsement by Truven Health Analytics. No attempt has been made to verify the data presented. All product recommendations should be confirmed with the specific manufacturer for verification of product performance.
CLOTHING

Specific recommendations and test data for this product type were not found in the available manufacturers' product literature.

FOOTWEAR

Specific recommendations and test data for this product type were not found in the available manufacturers' product literature.

GLOVES

Butyl

North Safety Products

Butyl Series

Degradation Rating: Excellent
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): None Detected
Notes: Not Listed
Citation: (North, 2002)

Butyl/Neoprene

Comasec Safety, Inc

Butyl+Plus

Degradation Rating: Not reported
Breakthrough Time (minutes): < 480
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Natural Rubber

Comasec Safety, Inc

Flexigum

Degradation Rating: Not reported
Breakthrough Time (minutes): < 480
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Neoprene

Wells Lamont Industrial

Not specified

Degradation Rating: Excellent
Breakthrough Time (minutes): No Breakthrough Time provided
Permeation Rate (mcg/cm2/min): No Permeation Rate provided
Notes: Not Listed
Citation: (Wells Lamont Industrial, 2002)

Nitrile

Comasec Safety, Inc

Comatril

Degradation Rating: Not reported
Breakthrough Time (minutes): < 480
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Flexiproof

Degradation Rating: Not reported
Breakthrough Time (minutes): < 480
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Wells Lamont Industrial

Not specified

Degradation Rating: Excellent
Breakthrough Time (minutes): No Breakthrough Time provided
Permeation Rate (mcg/cm2/min): No Permeation Rate provided
Notes: Not Listed
Citation: (Wells Lamont Industrial, 2002)

Polyvinyl Chloride

Comasec Safety, Inc

Comastar

Degradation Rating: Not reported
Breakthrough Time (minutes): < 480
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Normal

Degradation Rating: Not reported
Breakthrough Time (minutes): < 480
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Wells Lamont Industrial

Not specified

Degradation Rating: Excellent
Breakthrough Time (minutes): No Breakthrough Time provided
Permeation Rate (mcg/cm2/min): No Permeation Rate provided
Notes: Not Listed
Citation: (Wells Lamont Industrial, 2002)

Polyvinyl Chloride/Nitrile

Comasec Safety, Inc

Multi+plus

Degradation Rating: Not reported
Breakthrough Time (minutes): < 480
Permeation Rate (mcg/cm2/min): Not reported
Notes: tested in conformity with the standard EN 374-3
Citation: (Comasec Safety, Inc., 2003)

Viton

North Safety Products

Viton Series

Degradation Rating: Excellent
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): None Detected
Notes: Not Listed
Citation: (North, 2002)

GENERAL INFORMATION

This section provides a compilation of chemical resistance information and test data for specific protective clothing products. Chemical resistance information includes both degradation resistance ratings and permeation resistance data. This information is designed to assist in the selection of appropriate protective clothing. Only data on specific products and manufacturers are included. Generic information or recommendations are not provided since significant differences can exist in the chemical resistance for apparent similar product types.
Specific product information is organized by general product type (gloves, garments, and footwear), material type, and manufacturer. The category 'garments' may include totally encapsulating suits, splash suits, as well as other items (e.g., coveralls, jackets, and aprons). Specific manufacturers should be contacted to determine the features of available styles/models.
In addition to chemical resistance information, there are many critical variables in the selection of protective clothing which cannot be represented in this summary of the literature. Some factors to be considered in choosing protective clothing include, but are not limited to: overall clothing integrity, physical hazard resistance, durability, human factors, ease of decontamination, and cost. Overall clothing integrity refers to a specific design's ability to offer consistent protection for all clothing-covered areas of the body. Physical hazards include resisting the effects of abrasion, cuts, tears, and punctures. Human factors entail effects on wearer mobility, visibility, and hearing for garments; dexterity, tactility, and grip for gloves; ankle support and weight for footwear; and, any effect of the clothing on the function of the wearer. There are several variations in the design for gloves, garments, and footwear that affect these factors. Protective clothing must properly be sized and correctly fit the wearer to ensure its proper use and function.
As required in the U.S.A., protective clothing should be selected based on a risk assessment of the workplace. This risk assessment must account for the identification of existing as well as potential hazards and involve the recommendation of protective clothing appropriate for the identified hazards. Therefore, the recommendations in this section should not be used as the sole basis for decisions on choice of protective clothing, but rather should be used as a tool by qualified occupational health and safety professionals or other technically qualified persons in conjunction with a review of all mitigating factors. Consult the OSHA PPE Standard (29 CFR 1910.132 - 1910.138) for regulations and additional guidance regarding the selection and use of protective clothing and equipment. For general information on protective clothing selection, refer to the "PERSONAL PROTECTIVE EQUIPMENT - OSHA PUB 3077" document.
PROTECTIVE CLOTHING SELECTION

Determine the type of protective clothing item needed based on a risk assessment (e.g., gloves, garments, footwear).
For high risk situations, choose clothing that covers all parts of the body that may be exposed. In many cases, multiple clothing items will be required. Low risk situations may permit partial body protective clothing. Select protective clothing products that have reported chemical resistance data. High risk situations involving full body clothing or extended chemical contact often require permeation resistance data to determine the barrier effectiveness of materials used in the construction of clothing. Relatively low risk situations, where only splash or incidental exposure occur, may allow use of protective clothing based on degradation or penetration resistance data. Specifics on the interpretation of chemical resistance data are presented below.
Other factors must be considered in addition to chemical resistance. The selected chemical protective clothing item should offer the optimal combination of protection against identified hazards while allowing maximum function and comfort.

INTERPRETATION OF DEGRADATION RATINGS

Degradation refers to physical changes in a material as the result of chemical exposure. Degradation may become evident in visible changes, such as discoloration, swelling, delamination, deterioration, or disintegration. Degradation effects may also be measured by weight change or other changes in a material's physical properties (e.g., strength, elasticity, hardness).
Degradation resistance ratings are provided by manufacturers to rate the amount of degradation that occurs for a particular protective clothing material when contacted by a chemical. All degradation ratings are qualitative and include ratings, such as "EXCELLENT," "GOOD," "FAIR," "POOR," and "NOT RECOMMENDED." There is no standard test method for the measurement of chemical degradation resistance; therefore, manufacturer ratings may be based on different testing approaches. This makes comparison of degradation ratings between manufacturers unreliable.
The use of degradation resistance ratings alone to recommend protective clothing, particularly for high hazard situations, should be avoided. Degradation resistance testing does not directly assess the barrier quality of protective clothing, since materials can show relatively little degradation but still allow either permeation or penetration by a chemical. Degradation resistance ratings can be used to exclude protective clothing materials from consideration. Protective clothing materials with a "NOT RECOMMENDED" degradation resistance rating should never be used.
For some products, the rating "NO PENETRATION" is provided. This refers to penetration resistance test results that are based on a different procedure (American Society for Testing and Materials (ASTM) Standard Test Method F 903). Penetration resistance testing involves placing a material sample in a test cell, exposing the exterior side of the material to a chemical, and then observing the interior side of the material for visible signs of liquid penetration. Part of the test is conducted at an elevated pressure. Test results are reported as pass (no penetration) or fail (penetration detected). Unlike degradation testing, penetration testing provides an assessment of protective clothing material barrier performance. Since penetration resistance testing examines only observable amounts of liquid penetration, permeation may still occur. The use of penetration resistance data must be restricted to liquid chemicals, and should be limited to scenarios where there is no reasonable vapor exposure hazard under the conditions of exposure.

INTERPRETATION OF PERMEATION DATA

Permeation is the process of chemical movement through a material on a molecular level. Permeation resistance refers to the ability of a material to retard or prevent chemical movement through it. Permeation may occur without any visible signs of degradation.
Permeation resistance is measured using a test cell which is divided into two halves by a protective clothing specimen. Chemical is placed on the challenge side, while the collection side is periodically monitored for permeating chemical. Permeation data were obtained in accordance with the American Society for Testing and Materials (ASTM) Standard Test Method F 739 (Resistance of Materials Used in Protective Clothing to Permeation by Liquids and Gases), unless stated otherwise. In the case of chemicals that are classified as warfare agents, the data were obtained in accordance with the Military Standard 282 (MIL-STD-282) (Military Standard, Filter Units, Protective Clothing, Gas-Mask Components, and Related Products: Performance Test Methods).
Permeation rate is the amount of chemical that passes through a material for a measured surface area per unit time. In this section, permeation rate is expressed in micrograms per square centimeter per minute (mcg/cm(2)/min). The reported permeation rate is either the steady-state rate or the maximum rate observed during testing. In some cases, very large permeation rates exceed measurement techniques and are reported as ">" (greater than) or "HIGH."
Breakthrough time is the elapsed time, in minutes, from the time the chemical comes in contact with the material exterior surface, to the time that chemical is detected on the interior surface. When no breakthrough is detected, the breakthrough time is report as ">" the testing period. If permeation breakthrough is rapid, results are reported as "<" (less than) the earlier sampling time or as "IMMEDIATELY" (which usually means breakthrough in less than 4 minutes).
The breakthrough time should exceed the expected use period of the selected protective clothing. Additionally, there are several other factors that must be taken into account to provide appropriate protection.
Permeation testing is usually conducted with full strength, undiluted chemical for the duration of the test period. Actual exposures may involve diluted chemical for short or intermittent exposure periods.
Permeation testing is usually conducted at room temperature. Permeation occurs faster at elevated temperatures (short breakthrough times and higher permeation rates) and slower at reduced temperatures (long breakthrough times and lower permeation rates).
Permeation resistance of mixtures cannot usually be determined on the basis of the individual chemicals making up the mixture. Synergistic effects may occur and result in more rapid permeation than accounted for by the individual mixture chemicals.
Permeation rates may be used to calculate potential wearer exposure; however, several assumptions must be made about the extent of exposure and condition of clothing wear. Furthermore, there are few chemicals with dermal exposure limits, making it difficult to determine an acceptable skin exposure level.

COMPANY INFORMATION

Comasec Safety, Inc 8 Niblick Road Box 1219 Enfield, CT 06083-1219 USA Phone: (860) 741-2207 Fax: (860) 741-0881 Toll-Free: (800) 333-0219 Website: http://www.comasecsafety.com Email: info@comasecsafety.com
North Safety Products 2000 Plainfield Pike Cranston, RI 02921 USA Phone: (800) 430-4110 Fax: (800) 572-6346 Toll-Free: (800) 430-4110 Website: http://www.northsafety.com Email: marketing@northsafety.com
Wells Lamont Industrial 6640 W. Touhy Ave. Niles, IL 60714 USA Fax: (847) 647-6943 Toll-Free: (800) 247-3295 Website: http://www.wellslamontindustry.com Email: kmeger@wellslamont.com

REFERENCES

CHEMICAL PROTECTIVE CLOTHING CITATIONS

The following sources were consulted for chemical protective clothing data:

(Ansell-Edmont, 2001)
(Bata Shoe Company, 1995)
(Best Manufacturing, 2002)
(Best Manufacturing, 2004)
(Boss Manufacturing Company, 1998)
(ChemFab Corporation, 1993)
(Comasec Safety, Inc., 2003)
(Comasec Safety, Inc., 2003a)
(DuPont, 2002)
(DuPont, 2002)
(DuPont, 2003)
(Guardian Manufacturing Group, 2001)
(ILC Dover, Inc., 1998)
(Kappler Inc., 2001)
(Kimberly-Clark, 2002)
(LaCrosse-Rainfair, 1997)
(MAPA Professional, 2003)
(MAPA Professional, 2004)
(Mar-Mac Manufacturing, Inc, 1995)
(Marigold Industrial, 2003)
(Memphis Glove Company, 2001)
(Montgomery Safety Products, 1995)
(Nat-Wear, 2001)
(Neese Industries, Inc., 2003)
(North, 2002)
(North, 2002)
(Playtex, 1995)
(River City, 1995)
(Safety 4, 2002)
(Servus, 1995)
(Standard Safety Equipment, 1995)
(Tingley, 2002)
(Trelleborg-Viking, Inc., 2001)
(Trelleborg-Viking, Inc., 2002)
(Wells Lamont Industrial, 2002)
(Workrite, 1997)

-PHYSICAL HAZARDS

FIRE HAZARD

SUMMARY

Editor's Note: An ERG guide with information appropriate to this material does not exist.

FLAMMABILITY CLASSIFICATION

NFPA Flammability Rating for CAS10043-35-3 (NFPA, 2002):

Not Listed

FIRE CONTROL/EXTINGUISHING AGENTS

Editor's Note: An ERG guide with information appropriate to this material does not exist.

NFPA Extinguishing Methods for CAS10043-35-3 (NFPA, 2002):

Not Listed

EVACUATION PROCEDURES

SUMMARY

Editor's Note: An ERG guide with information appropriate to this material does not exist.

AIHA ERPG Values for CAS10043-35-3 (AIHA, 2006):

Not Listed

DOE TEEL Values for CAS10043-35-3 (U.S. Department of Energy, Office of Emergency Management, 2010):

Listed as Boric acid
TEEL-0 (units = mg/m3): 2
TEEL-1 (units = mg/m3): 6
TEEL-2 (units = mg/m3): 150
TEEL-3 (units = mg/m3): 150
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 CAS10043-35-3 (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 CAS10043-35-3 (National Institute for Occupational Safety and Health, 2007):

Not Listed

CONTAINMENT/WASTE TREATMENT OPTIONS

SUMMARY

Editor's Note: An ERG guide with information appropriate to this material does not exist.

SMALL LEAK/SPILL

Editor's Note: An ERG guide with information appropriate to this material does not exist.

LARGE LEAK/SPILL

Editor's Note: An ERG guide with information appropriate to this material does not exist.

-PHYSICAL/CHEMICAL PROPERTIES

MOLECULAR WEIGHT

61.83

DESCRIPTION/PHYSICAL STATE

Boric acid exists as colorless, transparent crystals or white granules or powder. It is odorless with a faintly bitter taste (HSDB, 2004).

SPECIFIC GRAVITY

OTHER TEMPERATURE AND/OR PRESSURE

1.435 (at 20.0 degrees C) (CHRIS, 2004)
1.435 (at 15 degrees C) (HSDB, 2004)

FREEZING/MELTING POINT

MELTING POINT

169 ± 1 degrees C (HSDB, 2004)

BOILING POINT

300 degrees C (loses 1.5 water) (HSDB, 2004)

-REFERENCES

GENERAL BIBLIOGRAPHY

40 CFR 372.28: Environmental Protection Agency - Toxic Chemical Release Reporting, Community Right-To-Know, Lower thresholds for chemicals of special concern. National Archives and Records Administration (NARA) and the Government Printing Office (GPO). Washington, DC. Final rules current as of Apr 3, 2006.

40 CFR 372.65: Environmental Protection Agency - Toxic Chemical Release Reporting, Community Right-To-Know, Chemicals and Chemical Categories to which this part applies. National Archives and Records Association (NARA) and the Government Printing Office (GPO), Washington, DC. Final rules current as of Apr 3, 2006.

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Information to evaluate chemical incidents

Information to evaluate chemical incidents

Information to evaluate chemical incidents