Boric Acid

Product Identifier

Boric Acid

CAS Number

10043-35-3

Chemical Formula

BH3O3

Molecular Weight

61.84 g/mol

Manufacturer

Alliance Chemical
204 South Edmond Street, Taylor, TX 76574

Emergency Phone

Chemtel 1-800-255-3924 (24/7)

Recommended Use

Industrial / laboratory chemical. See Section 7.

Signal Word

Danger

Hazard Statements

• H360FDMay damage fertility. May damage the unborn child.

Precautionary Statements

• P201Obtain special instructions before use.
• P202Do not handle until all safety precautions have been read and understood.
• P280Wear protective gloves, protective clothing, and eye/face protection.
• P308+P313IF exposed or concerned: Get medical advice or attention.
• P405Store locked up.
• P501Dispose of contents and container in accordance with local, regional, national, and international regulations.

Hazard (H) and precautionary (P) statements and pictograms conform to GHS Rev. 9. The full classification rationale is in the downloadable SDS PDF.

Concentrations are nominal; lot-specific values appear on the Certificate of Analysis. Components not contributing to classification are omitted.

Eyes

Rinse with plenty of water for at least 15 minutes. Remove contact lenses if present and easy to do. Continue rinsing. Seek medical attention immediately.

Skin

Immediately flush with plenty of water for at least 15 minutes while removing contaminated clothing. Wash with soap. Get medical attention immediately.

Inhalation

Move person to fresh air and keep comfortable for breathing. If breathing is difficult, give oxygen. If not breathing, give artificial respiration. Get medical attention immediately.

Ingestion

Do Not Induce Vomiting! Never give anything by mouth to an unconscious person. If conscious, wash out mouth with water. Get medical attention immediately.

Suitable Extinguishing Media

Use water spray, alcohol-resistant foam, dry chemical, or CO2. Use measures appropriate to local circumstances.

Unsuitable Extinguishing Media

Do not use a solid water stream as it may scatter and spread fire.

Protective Equipment

Wear self-contained breathing apparatus and full protective clothing.

Hazardous Combustion Products

May include carbon oxides and other toxic fumes. See Section 10.

Personal Precautions

Use PPE as described in Section 8. Ensure adequate ventilation. Evacuate personnel to safe areas.

Environmental Precautions

Prevent leakage or spillage from entering drains, sewers, or waterways.

Containment & Cleanup

Absorb with inert material. Collect in appropriate waste container. Dispose per applicable regulations.

Safe Handling

Use with adequate ventilation. Avoid contact with skin, eyes, and clothing. Wash thoroughly after handling. Keep container closed when not in use.

Safe Storage

Store in a cool, dry, well-ventilated area. Keep away from incompatible materials (see Section 10). Keep containers tightly closed.

Occupational Exposure Limits

Engineering Controls

Use adequate ventilation. Provide eyewash stations and quick-drench showers accessible to areas of use.

Eye/Face Protection

Wear chemical safety goggles or face shield.

Skin Protection

Wear chemical-resistant gloves and protective clothing.

Respiratory Protection

Use NIOSH-approved respirator if exposure limits are exceeded or irritation occurs.

Exposure limits sourced from NIOSH Pocket Guide and OSHA 29 CFR 1910.1000. Hazard classification from ECHA Classification and Labelling Inventory (CLP Annex VI).

Appearance

Passes

Form

Solid

Odor

Odorless

pH

4.2000

Density

1.435 at 68 °F (USCG, 1999) - Denser than water; will sink g/cm³

Boiling Point

572 °F at 760 mmHg (decomposes) (NTP, 1992) °C

Melting Point

340 °F (NTP, 1992) °C

Flash Point

N/A °C

Vapor Pressure

1.6X10-6 mm Hg at 25 °C (2.136X10-4 Pa); log P (in Pa) = 26.83 - 9094/T where T is deg K mmHg

Solubility

10 to 50 mg/mL at 66 °F (NTP, 1992)

Values shown reflect product-specific canonical data. Lot-specific ranges may vary; see the Certificate of Analysis for the shipped lot.

Chemical Stability

Stable under recommended storage conditions.

Possibility of Hazardous Reactions

None under normal processing conditions.

Conditions to Avoid

Heat, sparks, open flame, and incompatible materials.

Incompatible Materials

Strong oxidizing agents, strong acids, strong bases.

Hazardous Decomposition Products

May produce carbon oxides and other toxic fumes when heated to decomposition.

See Section 2 for GHS hazard classification.

Carcinogen Classification

Ecotoxicity

Fish LC50: 79 mg/L (96 h, Oncorhynchus mykiss — 79 ppm hard / 100 ppm soft water; cf. Ictalurus punctatus 22 ppm hard)

Persistence & Degradability

Persistent as boron — Does not biodegrade (inorganic boron)

Bioaccumulative Potential

BCF No bioaccumulation reported for boron compounds

Mobility in Soil

High soil mobility; leaches readily (pH-dependent adsorption, max pH 8.5–9)

Dispose of contents/container in accordance with applicable federal, state, and local regulations. Do not dispose of into drains or waterways.

Not regulated for transport under US DOT 49 CFR Subchapter C, IMDG, or IATA DGR.

SARA 311/312 hazard categories correspond to the GHS classification in Section 2. Data retrieved as of: California Proposition 65 2026-05-05; US EPA TSCA Active Inventory 2026-05-05; EPCRA SARA 313 (TRI) 2026-05-05.

Revision Date

2026-07-17

GHS Format

GHS Rev. 9 (2021), 16-section format per OSHA HCS 2024 (29 CFR 1910.1200).