Phosphoric Acid 50% Technical Grade

Product Identifier

Phosphoric Acid 50% Technical Grade

CAS Number

7664-38-2

Chemical Formula

H3O4P

Molecular Weight

97.995 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

• H290May be corrosive to metals
• H314Causes severe skin burns and eye damage

Precautionary Statements

• P234Keep only in original packaging.
• P260Do not breathe dust, fume, gas, mist, vapours or spray.
• P264Wash hands and face thoroughly after handling.
• P280Wear protective gloves, protective clothing, and eye/face protection.
• P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
• P303+P361+P353IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
• P304+P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
• P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P310Immediately call a POISON CENTER or doctor.
• P321Specific treatment (see first-aid information on this label).
• P363Wash contaminated clothing before reuse.
• 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

Dry chemical, CO2, water spray. Use water spray to cool containers.

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. Use corrosion-resistant containers. 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

For mist or aerosol applications (e.g., spray, atomization, pressure washing), use a NIOSH-approved half-face air-purifying respirator with combination acid gas / P100 cartridges. For dust exposure, an N95 or P100 particulate filter is acceptable. Ensure local exhaust ventilation.

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

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 acids, strong bases, reactive metals, water (for some concentrated forms).

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

Algae ErC50: 77.9 mg/L (72 h, Pseudokirchneriella subcapitata — pH-driven; ErC50 (growth rate)); Daphnia EC50: > 376 mg/L (48 h, Daphnia magna — pH-driven; >376 mg/L WITH pH adjustment (pH 7.53–7.95)); Fish LC50: 75.1 mg/L (96 h, Oryzias latipes — pH-driven (pH 3.39–4.45, no pH adjustment))

Persistence & Degradability

Not applicable (inorganic; dissociates to phosphate ions). Phosphate may persist and contribute to eutrophication.

Bioaccumulative Potential

log Kow −2.15 (measured); −0.77 (estimated)

Mobility in Soil

High (miscible with water)

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

US DOT (49 CFR)

UN Number

UN1805

Proper Shipping Name

Phosphoric acid solution

Hazard Class

8

Packing Group

III

IMDG / IATA classifications may differ. Refer to the downloadable SDS PDF for international transport details. Verify current regulations before international shipment.

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).