Citric Acid Monohydrate - USP Food Grade

Product Identifier

Citric Acid Monohydrate - USP Food Grade

Grade

Food Grade

CAS Number

5949-29-1

Chemical Formula

C6H10O8

Molecular Weight

210.14 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

Warning

Hazard Statements

• H315Causes skin irritation
• H319Causes serious eye irritation
• H335May cause respiratory irritation

Precautionary Statements

• P261Avoid breathing dust, fume, gas, mist, vapours or spray.
• P264Wash hands and face thoroughly after handling.
• P271Use only outdoors or in a well-ventilated area.
• P280Wear protective gloves, protective clothing, and eye/face protection.
• P302+P352IF ON SKIN: Wash with plenty of water and soap.
• 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.
• P314Get medical advice or attention if you feel unwell.
• P321Specific treatment (see first-aid information on this label).
• P332+P313If skin irritation occurs: Get medical advice or attention.
• P337+P313If eye irritation persists: Get medical advice or attention.
• P362Take off contaminated clothing and wash before reuse.
• P403+P233Store in a well-ventilated place. Keep container tightly closed.
• 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

No established 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 a NIOSH-approved respirator (N95/P100 for particulate, organic vapor or acid gas cartridge as appropriate to the substance) when exposure limits may be exceeded or visible mist or dust is generated.

Appearance

Passes

Form

Crystal

Density

1.5 g/cm³ g/cm³

Boiling Point

175 °C

Melting Point

135 °C °C

Flash Point

385 °C

Solubility

Solubility in water, g/100ml at 20 °C: 59.2

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

Algae ErC50: > 640 mg/L (168 h, Scenedesmus quadricauda — 7-d EC0 640 (EC50 > 640). Bridged from anhydrous.); Daphnia EC50: 85 mg/L (24 h, Daphnia magna — not neutralised (acid effect); neutralised EC50 1535 mg/L. Bridged from anhydrous.); Fish LC50: ~ 440 mg/L (96 h, Leuciscus idus — solution not neutralised (acid effect); range 440–760 mg/L. Bridged from anhydrous 77-92-9.)

Persistence & Degradability

Not persistent — Readily biodegradable (97% CO₂ / 100% DOC, modified Sturm ~28 d)

Bioaccumulative Potential

log Kow −1.72 (20 °C), BCF 0.01 (estimated; no bioaccumulation, natural Krebs-cycle metabolite)

Mobility in Soil

Highly mobile; ~99.99% partitions to water

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).