Main Ingredient: Monocalcium Phosphate (Ca(H₂PO₄)₂·H₂O)
Content: 98-100%
Impurities: May contain trace amounts of dicalcium phosphate, calcium sulfate, water
Other Ingredients: No hazardous impurities above reporting thresholds
First Aid Measures
Inhalation: Remove to fresh air, seek medical attention for symptoms including difficulty breathing
Skin Contact: Wash affected area with plenty of water and soap
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present, continue rinsing, seek medical advice if irritation persists
Ingestion: Rinse mouth, never induce vomiting unless directed by medical personnel, consult a physician if substantial quantities are swallowed
Most Important Symptoms: Eye redness, mild respiratory discomfort, possible mild skin dryness
Fire-Fighting Measures
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide
Special Hazards: Material itself does not burn, but packaging may combust
Hazardous Combustion Products: Phosphorus oxides, calcium oxides released during heating
Protective Equipment: Wear self-contained breathing apparatus and full protective clothing if exposed to smoke or fumes
Firefighting Instructions: Avoid breathing vapors or dust, prevent runoff into waterways
Accidental Release Measures
Personal Precautions: Use protective gloves, goggles, dust mask; avoid breathing dust
Environmental Precautions: Prevent spillage from entering drains, surface water, or soil
Methods for Cleaning Up: Sweep or shovel into suitable container, avoid raising dust, wash affected area with abundant water
Disposal: See section on disposal considerations
Handling and Storage
Precautions for Safe Handling: Avoid contact with eyes and skin, prevent dust formation, ensure adequate ventilation in workplaces
Safe Storage Conditions: Store in a dry, cool, well-ventilated area away from strong alkalis and moisture
Packaging Materials: Use containers that keep material dry and protected from contamination
Special Considerations: Keep out of reach of children and unauthorized personnel
Exposure Controls and Personal Protection
Occupational Exposure Limits: No specific occupational exposure limit values set for MCP, use dust limits for nuisance particulates (typically 10 mg/m³ total dust, 3 mg/m³ respirable dust)
Engineering Controls: Local exhaust ventilation recommended, closed system operations preferred for bulk handling
Personal Protective Equipment: NIOSH approved dust mask, safety goggles, chemical-resistant gloves, work clothing covering arms and legs
Hygiene Measures: Wash hands before eating, drinking, or smoking, launder contaminated clothing regularly
Physical and Chemical Properties
Appearance: White crystalline powder, sometimes granular
Odor: Odorless
Molecular Weight: 252.07 g/mol (monohydrate)
pH: Typically 2.5–4.5 (1% solution)
Melting Point: Decomposes before melting
Solubility: Slightly soluble in water, insoluble in alcohol
Bulk Density: 900–1200 kg/m³
Boiling Point: Not applicable
Vapor Pressure: Negligible
Autoignition Temperature: Not applicable
Explosive Properties: Not explosive
Oxidizing Properties: Not oxidizing
Stability and Reactivity
Chemical Stability: Stable under normal conditions
Reactivity: Reacts with strong alkalis forming calcium phosphate precipitate and releasing heat
