Rose Mill Co.
100 Brook St.
West Hartford, CT 06110
860.232.9990 ph
860.232.9995 fx
wwwRoseMill.com
MSDS BORIC ACID
I. Product Identification Persons with pre-existing skin disorders or eye
Synonyms: ortho-Boric acid; boracic acid; problems, or impaired liver, kidney or
boric acid (H3BO3) respiratory function may be more susceptible to
Chemical Family: borates the effects of the substance.
CAS No.: 10043-35-3
Molecular Weight: 61.83 IV. First Aid Measures
Chemical Formula: H3BO3 Inhalation: Remove to fresh air if subject is
experiencing nose or throat irritation.
II. Composition/Information Ingestion: Boric acid has low acute toxicity. Observation
NFPA Health Rating: 0 for healthy adults is required only for ingestion of 4-8
NFPA Flammability Rating: 0 grams. For larger amounts ingested, maintain adequate
NFPA Reactivity Rating: 0 kidney function and force fluids.
Contact Rating: 1 Skin Contact: Remove any contaminated clothing.
HMIS Health Rating: 1 Wash skin with soap or mild detergent and water for at
HMIS Flammability Rating: 0 least 15 minutes. Get medical attention if irritation
HMIS Reactivity Rating: 0 develops or persists. Wash clothing before re-use.
Content: >99% boric acid <1% water Eye Contact: Immediately flush eyes with plenty of
water for at least 15 minutes, lifting lower and upper
III. Hazard/Potential Health Effects eyelids occasionally. Get medical attention if irritation
Boric acid is a white, odorless salt-like crystal or persists.
fine powder that is not flammable or
combustible. It has low dermal and oral toxicity. V. Fire Fighting Measures
It is quickly processed by the body and expelled Fire: Not considered to be a fire hazard. (29 CFR
through normal processes. 1910.1200).
Inhalation: Occasional mild irritation to nose or Fire Extinguishing Media: Use any means suitable for
throat may occur if exposed to high levels of extinguishing surrounding fire.
dust (>10mg/m3). Special Information: In the event of a fire, wear full
Ingestion: Small amounts (
likely to cause adverse effects. Larger amounts breathing apparatus with full face-piece operated in the
may cause gastrointestinal symptoms. pressure demand or other positive pressure mode.
Skin Contact:.Not significantly absorbed
through the intact skin. Readily absorbed VI. Accidental Release Measures
through damaged or burned skin. Symptoms of Ventilate area of leak or spill. Wear appropriate personal
skin absorption parallel inhalation and protective equipment as specified in Section 8.
ingestion. Spills: Pick up and place in a suitable container for
Eye Contact: Used an an eye antiseptic. May reclamation or disposal, using a method that does not
cause irritation, redness, and pain if exposed to generate dust.
extremely high amounts.
Chronic Exposure: Symptoms of over- VII. Handling and Storage
exposure have been associated with high levels Store in closed containers in a cool, dry area. Carbon
of ingestion and/or absorption through large steel or aluminum containers are suitable for storage.
areas of damaged skin (such as vomiting, Stainless steel is needed for moist conditions. Use good
diarrhea, skin rash, convulsions and anemia). housekeeping practices to prevent accumulation of dust
Studies of dogs and rats have shown that and follow sound cleaning techniques that will keep
infertility and damage to testes can result from airborne particulates at a low level. Wash hands after
acute or chronic ingestion of boric acid. handling this material. Avoid contact especially when
Evidence of toxic effects on the human skin is cut or abraided. Observe all warnings and
reproductive system has not occured. precautions listed for the product.
Aggravation of Pre-existing Conditions:
Chem_Boric_Acid_MSDS Revised: 5/11/2010 Supersedes: 11//27/2008
VIII. Exposure Controls/Personal Protection NTP Carcinogen
Airborne Exposure Limits: OSHA Permissible Ingredient Known Anticipated
Exposure Limit (PEL):15 mg/m3 total dust, 5 mg/m3 ------------------------------------ ----- -----------
respirable fraction for nuisance dusts. Boric Acid (10043-35-3) No No
ACGIH Threshold Limit Value (TLV): 10 mg/m3 total
XII. Ecological Information
dust containing no asbestos and < 1% crystalline silica
Environmental Fate: No information found.
for Particulates Not Otherwise Classified (PNOC).
Ventilation System: A system of local and/or general Environmental Toxicity: The EC50/48-hour values for
exhaust is recommended to keep employee exposures daphnia are over 100 mg/l. This material may be toxic to
below the Airborne Exposure Limits. Local exhaust aquatic life.
ventilation is generally preferred because it can control
XIII. Disposal Considerations
the emissions of the contaminant at its source,
preventing dispersion of it into the general work area. RCRA 40 CFR 261 not listed, NPRI Canada not listed.
Please refer to the ACGIH document, Industrial Whatever cannot be saved for recovery or recycling
Ventilation, A Manual of Recommended Practices, most should be managed in an appropriate and approved
recent edition, for details. waste disposal facility. Processing, use or contamination
Personal Respirators (NIOSH Approved): If the of this product may change the waste management
exposure limit is exceeded and engineering controls are options. State and local disposal regulations may differ
not feasible, a half face-piece particulate respirator from federal disposal regulations. Dispose of container
(NIOSH type N95 or better filters) may be worn for up to and unused contents in accordance with federal, state
ten times the exposure limit or the maximum use and local requirements.
concentration specified by the appropriate regulatory
XIV. Transport Information:
agency or respirator supplier, whichever is lowest.. A
full-face piece particulate respirator (NIOSH type N100 Not regulated. USDOT non-hazardous. TDG Canada not
filters) may be worn up to 50 times the exposure limit, or regulated, no UN number and not regulated for
the maximum use concentration specified by the international air/rail/road/sea transportation.
appropriate regulatory agency, or respirator supplier,
XV. Regulatory Information
whichever is lowest. If oil particles (e.g. lubricants,
US EPA RCRA: not listed as hazardous waste (40 CFR
cutting fluids, glycerin, etc.) are present, use a NIOSH
type R or P filter. 261)
Skin Protection: Gloves and lab coat, apron or CERCLA/SARA: not listed.
SDWA: not listed.
coveralls.
Eye Protection: Use chemical safety goggles. Maintain CWA 33 USC 1251: boric acid itself is not itself a
eye wash fountain and quick-drench facilities in work discharge covered by any water quality criteria...
IARC: not listed as a carcinogen.
area.
Cal. Prop. 65: not listed as carcinogen or reproductive
IX. Physical and Chemical Properties toxin
Appearance: White powder or granules.
Odor: Odorless.
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Solubility: 4.7% @ 20 C/68 F. Rose Mill Co.
Density: 1.43 100 Brook St.
pH: 6.1 Aqueous solution: (0.1% solution) West Hartford, CT 06110
% Volatiles by volume @ 21C (70F): 0 860.232.9990 ph
Boiling Point: Decomposes. 860.232.9995 fx
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Melting Point: 169 C (336 F)
Vapor Density (Air=1): No information found.
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Vapor Pressure (mm Hg): Neg. @ 20C (68 F) wwwRoseMill.com
Evaporation Rate (BuAc=1): No information info@RoseMill.com
X. Stability/Reactivity
Stability: Stable under ordinary conditions of use and
storage. If moisture is present, boric acid can be
corrosive to iron.
Hazardous Decomposition Products: None.
Hazardous Polymerization: Will not occur.
Incompatibilities: Potassium, acetic anhydride, alkalis,
carbonates, and hydroxides.
Conditions to Avoid: No information found.
XI. Toxicological Data
Oral rat LD50: 2660 mg/kg; oral woman LDLo: 200
mg/kg; investigated as a mutagen, tumorigen,
reproductive effector.
Reproductive Toxicity: See Chronic Health Hazards.
Chem_Boric_Acid_MSDS Revised: 5/11/2010 Supersedes: 11//27/2008
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