Material Safety Data Sheet (MSDS) for Dicalcium Phosphate
Identification
Product Name: Dicalcium Phosphate
Synonyms: Calcium hydrogen phosphate, Dibasic calcium phosphate
Chemical Formula: CaHPO4
Molecular Weight: 136.06 g/mol
CAS Number: 7757-93-9
Intended Use: Animal feed additive, dietary supplement, fertilizer, pharmaceutical excipient
Manufacturer Contact: Available through product supplier or importer
Emergency Phone: Listed by supplier or agency for chemical emergencies
Hazard Identification
Classification: Not classified as hazardous under GHS standards
Physical Hazards: Not flammable or explosive
Health Hazards: May cause irritation to eyes, skin, or respiratory tract if exposure persists
Environment Hazards: Not expected to present significant environmental risk under normal use
Label Elements: No signal word required, no hazard pictograms, precautionary statements for dust inhalation
Potential Risks: Prolonged contact may lead to mild irritation, high concentrations in air could cause coughing or respiratory discomfort, eye contact might cause redness or watering
Composition / Information on Ingredients
Chemical Identity: Dicalcium phosphate
Content: >97% by weight
Other Components: Trace amounts of calcium carbonate and magnesium may be present depending on source and grade
Impurities: No hazardous impurities present in significant amounts
Other Names: As described in regulatory inventories worldwide
First Aid Measures
Eye Contact: Rinse affected eyes gently with clean water for several minutes, remove contact lenses if possible
Skin Contact: Wash exposed area with mild soap and ample water, remove contaminated clothing
Inhalation: Move to fresh air, support breathing as needed, seek further medical attention only if symptoms persist
Ingestion: Rinse mouth, drink water, consult physician in case of large ingestion or persistent symptoms
Advice to Physicians: Symptomatic treatment recommended, no known delayed effects
Acute Symptoms: Itching, redness, coughing; serious outcomes are uncommon for short exposures
Fire-Fighting Measures
Extinguishing Media: Use dry chemical, carbon dioxide, foam, or water spray for fires near product
Special Hazards: Does not fuel fire, no dangerous decomposition under normal fire conditions
Protective Equipment: Firefighters should wear protective clothing and self-contained breathing apparatus if excessive dust is present
Thermal Decomposition Products: May release calcium oxides and phosphorus oxides at high temperatures
Accidental Release Measures
Personal Precautions: Avoid breathing dust, avoid contact with skin and eyes
Protective Equipment: Respiratory mask, goggles, gloves in case of high dust levels
Environmental Precautions: Prevent uncontrollable discharge into water bodies
Clean-Up Methods: Sweep up material, collect in suitable containers for recovery or disposal, wash spill area with water
Disposal: Dispose with consideration for local environmental guidelines
Uncontrolled Release: Large spills require respiratory protection and containment barriers
Handling and Storage
Handling Recommendations: Avoid generating dust, use with sufficient ventilation, wash hands before eating or drinking
Hygiene Practices: Remove and wash contaminated clothing before reuse
Storage Conditions: Keep in tightly closed containers, store in a cool, dry, well-ventilated area
Incompatible Materials: Store away from strong acids, strong oxidizers
Reactivity Concerns: Avoid mixing with concentrated acids, which could release phosphoric acid fumes
Exposure Controls and Personal Protection
Occupational Exposure Limits: OSHA PEL (particulate, not otherwise regulated): 15 mg/m3 (total dust), 5 mg/m3 (respirable fraction)
Engineering Controls: Use local exhaust ventilation, process enclosure, or dust collection
Personal Protection: Protective gloves, safety goggles, dust mask or respirator if airborne concentrations become elevated
Hygiene Measures: Avoid exposure to eyes or mucous membranes, wash thoroughly before breaks
Environmental Controls: Prevent spillage into drains or watercourses by using containment and proper disposal techniques
Physical and Chemical Properties
Appearance: White, odorless crystalline powder or granules
Odor: None
pH (10% suspension): 6.5 – 7.5
Melting Point/Freezing Point: Decomposes above 190°C
Boiling Point: Not applicable
Vapor Pressure: Not measurable
Solubility in Water: Slight (18 mg/L at 25°C)
Density: 2.3 – 2.5 g/cm3
Flash Point: Not flammable
Explosive Limits: Not applicable
Partition Coefficient: Not available
Viscosity: Not applicable for solids
Stability and Reactivity
Chemical Stability: Stable under recommended storage conditions
Reactivity: Reacts with concentrated acids to form phosphoric acid and calcium salts
Conditions to Avoid: Prolonged exposure to moisture or strong acids
Hazardous Decomposition Products: Calcium oxide, phosphorus oxides at high heat
Polymerization: Does not occur under normal conditions
Toxicological Information
Routes of Exposure: Eyes, skin, inhalation, ingestion
Acute Effects: Mild irritation to eyes, skin, and respiratory tract, especially with high dust exposure
Chronic Effects: No evidence of chronic health hazards from repeated low-level exposure
LD50 (oral, rat): >2,000 mg/kg
Carcinogenicity: Not listed as carcinogen by IARC, NTP, OSHA
Reproductive Toxicity: No known effects
Sensitization: Contains no ingredients that commonly cause allergic reactions
Other Data: No evidence of mutagenic, teratogenic, or neurotoxic effects in standard animal studies
Ecological Information
Ecotoxicity: Low toxicity to aquatic and terrestrial life
Persistence and Degradability: Moderately soluble in water, likely to be immobilized by soil minerals
Bioaccumulation Potential: Not expected to bioaccumulate
Mobility: Moves slowly in soil due to low solubility
Environmental Impact: Phosphates can promote eutrophication if released in large quantities into surface waters, leading to excessive algae growth
Aquatic Toxicity: Minimal direct effects at environmentally relevant concentrations
Other Adverse Effects: No evidence for acute or long-term ecological harm at routine usage levels
Disposal Considerations
Waste Handling: Dispose as non-hazardous solid waste, in accordance with local, regional, and national regulations
Safe Disposal Methods: Landfill or incineration is suitable in permitted facilities
Contaminated Packaging: Clean containers may be recycled or disposed per regulatory guidance
Spillage Disposal: Collected spilled material can be reused if clean or disposed with similar waste if contaminated
Restrictions: Do not discharge to natural waters or sewer systems without appropriate treatment
Regulatory Codes: Classified as “inert” for most landfill categories in many jurisdictions
Transport Information
UN Number: Not regulated for transport
Transport Hazard Class: Not classified as hazardous
Packing Group: Not applicable
Proper Shipping Name: Dicalcium phosphate
Special Precautions: Avoid movement in wet conditions and prevent significant dust generation during transit
Label Requirements: No special labels for land, sea, or air carriage under international regulations
Environmental Hazards: Not considered marine pollutant or hazardous for transport
Transport Regulations: Conforms to ADR/RID, IMDG, ICAO/IATA as non-hazardous substance
Regulatory Information
Chemical Inventory Status: Listed in TSCA, EINECS, AICS, DSL, and other national inventories
Labelling Requirements: No special labeling under OSHA, EU CLP, or GHS
Safety Assessments: Evaluated for food, feed, and pharmaceutical use in many countries by relevant agencies
Worker Protection: OSHA general dust safety standards apply; ensure adequate ventilation and personal protective equipment in workplace
Specific Provisions: Comply with all applicable workplace, environmental, and product safety standards for handling phosphate products
REACH Status: Pre-registered or registered as required in the EU
Other Regulatory Notes: Restrictions may apply if product is used in sensitive environmental contexts or in large-scale agricultural applications
