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Chemical Name: Aluminum Phosphate
Synonyms: Alumino phosphate
Appearance: White, odorless powder, not soluble in most solvents, stable at room temperatures
Common Uses: Found in ceramics, dental cements, catalysts, fireproofing, fertilizer preparations; often turned to as a binder
CAS Number: 7784-30-7
Classification: Not considered highly hazardous in solid, non-respirable form
Health Hazards: Inhalation of dust can cause mild irritation to respiratory tract; skin contact rarely creates reaction unless prolonged; eyes may sting or water if exposed to dust; ingestion may irritate digestive system
Environmental Hazards: Bulk releases can impact water systems by slightly raising phosphate levels, though usually not enough to cause ecological disruption unless amounts are significant
Signal Words: Not listed under major acute hazard categories; always a good practice to handle with care
Pictograms: Typically absent from major GHS hazard labeling for this compound
Primary Ingredient: Aluminum Phosphate
Formula: AlPO4
Purity: Usually ranges above 98% in technical and lab forms
Impurities: Trace compounds including silica, iron oxides, or other minor metallic phosphates, rarely at levels above 1%
Inhalation: Move to an area with fresh air; rinse mouth and get medical advice if irritation keeps up
Skin Contact: Wash area with soap and water; contaminated clothing should be removed if reaction occurs
Eye Contact: Rinse cautiously with water for several minutes; keep eyelids apart to remove particles
Ingestion: Rinse mouth; drink water if person is fully conscious; avoid inducing vomiting; seek help if symptoms persist
Flammability: Will not burn or explode; stable under most fire conditions
Suitable Extinguishing Media: Use agent suitable for surrounding fire; aluminum phosphate itself will not contribute to combustion
Special Hazards: Dust creation may pose a respiratory risk; heated to decomposition, can produce irritating fumes of phosphorous oxides
Protective Equipment: Standard gear including gloves, goggles, and dust mask; self-contained breathing apparatus for heavy smoke
Personal Precautions: Wear goggles and dust mask; avoid breathing dust
Spill Containment: For small spills, sweep or vacuum without creating dust; moisten with water to limit airborne powder
Cleanup: Wash spill area with water after removal; prevent material entering drains if possible, as phosphates can affect water quality
Handling: Use with adequate ventilation to keep dust down; avoid skin or eye exposure
Storage: Store in a dry, cool place in tightly closed containers; moisture can cause caking and hardening, which makes the material tough to handle
Incompatibilities: Strong acids can break down and generate irritating gases; avoid mixing with strong alkalis or reducing agents
Occupational Exposure Limits: No strict legal limits for aluminum phosphate dust, but general nuisance dust guidelines apply; 10 mg/m3 total dust (ACGIH TLV)
Ventilation: Local exhaust is best for large batches or where powder is being actively poured or mixed
Personal Protective Equipment: Safety glasses, nitrile or latex gloves, dust respirator when handling quantities that may become airborne
Hygiene Measures: Wash hands thoroughly after handling; do not eat, drink, or smoke in work area
Physical State: Fine powder or crystalline solid
Color: White
Odor: Nearly odorless
Density: Around 2.56 g/cm3
Melting Point: Decomposes above 1500°C, does not melt under normal heating
Solubility: Practically insoluble in water, acids break it down
pH: Mildly acidic in water suspension, if appreciable dissolution occurs
Chemical Stability: Chemically stable under recommended storage and handling conditions
Reactivity: Minimal under normal use; slow reaction with strong acids releases phosphoric acid and related vapors
Conditions to Avoid: Excess moisture, acidic conditions, high energy impacts or grinding in confined areas
Hazardous Decomposition: Phosphorus oxides at very high temperatures or with strong acids
Acute Effects: Inhaling high concentrations of dust can cause coughing, dryness, mild respiratory discomfort
Skin and Eye Contact: Prolonged contact sometimes brings about mild irritation or redness in sensitive people
Ingestion: Not considered highly toxic, may discomfort stomach if swallowed in quantity
Chronic Exposure: No clear evidence for serious long-term toxicity in humans at occupational or environmental exposure levels
Carcinogenicity: Not listed by IARC, OSHA, or NTP as carcinogenic
Symptoms of Exposure: Coughing, sneezing, nasal irritation, rarely nausea on accidental ingestion
Ecotoxicity: Low direct toxicity to aquatic organisms, though influx of phosphates to water can, in quantity, contribute to algal growth and upset of balance in sensitive streams or ponds
Mobility: Solid particles carry little risk of leaching unless acid break down occurs
Bioaccumulation: Aluminum compounds tend to stay out of biological cycles, do not build up in fish or plants
Waste Treatment: Sweep material into a sturdy container; avoid dust releases
Disposal: Put small quantities with regular industrial waste, provided there are no elevated phosphate discharge restrictions in local regulations
Environmental Precautions: Keep out of surface waters if possible, limit bulk dumping, watch total phosphate loads in waste systems
UN Number: Not classified under typical transport risk groups
Hazard Class: Not regulated as hazardous for transport by land, sea, or air when packed and labeled correctly
Packaging: Use sturdy, well-labeled containers that prevent accidental spillage and dusting during handlers' everyday movements
Status: Not listed under significant international chemical control regulations as a major hazardous material
Workplace Controls: States, provinces, or countries may demand dust control and basic labeling
Environmental Limits: Acts or laws may restrict phosphates in certain emissions or wastewater scenarios; local water protection ordinances can impose specific release limits
Community Right-to-Know: Material normally falls outside of major reporting thresholds, though large use sites sometimes need to provide documentation to area responders as part of best practices
