Product Name: Aluminum Diethyl Phosphinate
Chemical Family: Phosphinate salts
Recommended Uses: Flame retardant additive for polybutylene terephthalate (PBT) composites and compounds
Manufacturer Information: Typical producers specialize in industrial chemicals for plastics and resins, often supplying to manufacturers, molders, and extruders of engineering plastics
Contact Details: Emergency phone numbers and technical support lines published by suppliers, including global chemical manufacturers, usually available on request from the supplier’s catalog or website
Synonyms: Aluminum salt of diethylphosphinic acid
CAS Number: 225789-38-8
Signal Word: Warning (not classified as highly hazardous, but maintain precaution due to inhalation or contact risks)
GHS Classification: Skin irritation—Category 3; Eye irritation—Category 2B; Acute aquatic toxicity—Category 3
Hazard Statements: Causes mild skin and eye irritation with dust; may cause respiratory discomfort if inhaled during processing or handling of powder
Pictograms: Exclamation mark
Precautionary Statements: Avoid dust formation, use in well-ventilated areas, wear safety goggles and gloves, do not eat or drink while handling
Other Hazards: Combustible dust hazard in concentration if fine powder becomes airborne
Chemical Identity: Aluminum Diethyl Phosphinate
Molecular Formula: C4H10AlO4P
Concentration: >95% (pure grade in additive form for plastic modifications)
Impurities: Trace levels of hydrolyzed phosphinates, byproducts from production at less than 1%
Relevant Additives: Sometimes processed with anti-caking or flow agents (supplier specifications can vary)
Inhalation: Remove invididual to fresh air, loosen tight clothing, seek medical attention if symptoms persist (coughing, throat irritation)
Skin Contact: Rinse affected area with plenty of water, use mild soap if needed, remove contaminated clothing and wash before reuse
Eye Contact: Rinse eyes with clean water for several minutes, lift upper and lower eyelids carefully
Ingestion: Do not induce vomiting, rinse mouth out with water, obtain medical advice if larger amounts are swallowed accidentally
Most Important Symptoms/Effects: Mild irritation or discomfort, usually reversible with simple measures
Indication for Medical Attention: All symptoms typically resolve, persistent irritation requires professional evaluation
Suitable Extinguishing Media: Water spray, foam, dry chemical, or carbon dioxide for small fires near processing machinery
Fire Hazards: Product is not highly flammable, but powder can burn and emit irritating phosphorus oxides and metal fumes if exposed to significant heat
Special Protective Equipment: Firefighters should use self-contained breathing apparatus and full protective gear, particularly during indoor blazes with strong smoke/emission
Thermal Decomposition Products: Includes carbon oxides, phosphorus oxides, aluminum oxides (toxic if inhaled in poorly ventilated areas)
Other Considerations: Minimize dust dispersal in burning scenarios; avoid unnecessary runoff by using diking or containment methods in large incidents
Personal Precautions: Wear dust mask/respirator, chemical-resistant gloves, and tightly-fitting safety goggles
Environmental Precautions: Prevent leakage into soil, drains, or water systems by using absorbent materials where possible
Methods for Clean-up: Collect spilled powder with non-sparking tools (shovel or dustpan), sweep up gently to avoid raising dust, place in approved disposal containers
Decontamination: Wash area with plenty of water after removal, inspecting for residue or slip hazards
Reporting Requirements: Significant release to the environment or workplace regulated by local safety or environmental authorities may require notification
Safe Handling: Avoid generating and inhaling airborne dust; use local exhaust ventilation at transfer points; clean all PPE after use
Technical Measures: Regular housekeeping to avoid powder buildup in corners/crevices, control static discharge risks in bulk handling
Storage Conditions: Store in tightly closed original containers, keep in dry, well-ventilated storerooms away from sources of ignition, heat, or direct sunlight
Incompatible Materials: Strong acids and bases, oxidizers, moisture-sensitive chemicals
Specific Use Conditions: Use only with PBT base resin as intended, re-seal packages immediately after removal
Engineering Controls: Use process enclosures and local exhaust ventilation to minimize airborne particles near blending and feeding stations
Personal Protective Equipment (PPE): Loose-fitting clothing, safety goggles/face shield, chemically resistant gloves (nitrile, neoprene)
Respiratory Protection: Dust mask or P2/P3 particulate respirator where airborne dust may rise above background workplace levels
Occupational Exposure Limit: No established ACGIH or OSHA limit for Aluminum Diethyl Phosphinate—general nuisance dust limits typically apply (total dust: 10 mg/m³;
respirable fraction: 3 mg/m³)
Hygiene Measures: Wash hands and exposed skin before eating or drinking, prohibit smoking/vaping around work area
Environmental Controls: Regular monitoring for dust levels, spill kits in place for immediate response
Appearance: Fine white to off-white powder or granular solid
Odor: Practically odorless
pH (as aqueous suspension): 3.5–6.5
Solubility: Practically insoluble in water, soluble in strong acids
Melting Point/Range: Decomposes before melting (typically above 250°C, powder may change color on strong heating)
Density: 1.4–1.5 g/cm³
Vapor Pressure: Negligible under normal use
Partition Coefficient (n-octanol/water): Not applicable, non-volatile solid
Other Properties: Non-hygroscopic, low volatility, will not emit significant vapors under normal use
Chemical Stability: Stable under recommended handling and storage conditions
Reactivity: Reacts with strong acids, may hydrolyze in presence of water under high temperatures
Possibility of Hazardous Reactions: Released gases (phosphorus oxides, organophosphates) at extreme temperatures (>250°C)
Incompatible Materials: Moisture, strong oxidizers, strong bases (can drive decomposition and gas formation)
Hazardous Decomposition Products: Combustion or thermal decomposition can release toxic gases, including phosphorus oxides and aluminum compounds
Conditions to Avoid: High humidity, direct contact with incompatible chemicals, open flames in processing zone
Likely Routes of Exposure: Inhalation, skin and eye contact during handling or blending
Acute Toxicity: Low oral and dermal toxicity in animal studies; dust may irritate the respiratory tract or eyes
Irritation/Corrosiveness: Mildly irritating to skin and eyes, sensitive individuals might develop temporary rashes or itching
Chronic Toxicity: No known chronic human toxicity documented through workplace exposure; long-term animal studies show minimal risk at normal working concentrations
Carcinogenicity: Not classified as a carcinogen by IARC, NTP, or OSHA
Other Health Information: Phosphinate salts do not bioaccumulate in body tissues, metabolic breakdown products are excreted in animals
Environmental Fate: Practically insoluble in water, low risk of aquatic bioaccumulation
Ecotoxicity: Fish and aquatic invertebrates display low sensitivity; high concentrations can affect microbial balance in soil and water
Persistence and Degradability: Does not readily degrade under normal environmental conditions; breaks down slowly under sunlight and microbial action
Mobility: Strong binding to soil particles reduces risk of leaching into groundwater
Other Environmental Hazards: Over-application or large spillage could suppress beneficial soil microflora temporarily, especially with heavy repeat handling at disposal sites
Waste Treatment Methods: Incinerate in approved chemical waste facility, or landfilled following local, regional, and national environmental controls
Disposal of Packaging: Rinse and recycle or safely dispose of empty packaging; burn or landfill containers if recycling is not feasible
Additional Precautions: Do not discharge wash water or slurry containing solids into streams, lakes, or municipal sewers
Regulatory Considerations: Managed as a non-hazardous inorganic salt under most country-specific hazardous waste codes, though local regulation can be stricter depending on context
UN Number: Not regulated for transport
Proper Shipping Name: Non-regulated solid chemical
Transport Hazard Class: Not classified as dangerous goods by ADR/RID/IMDG/IATA
Packing Group: Not assigned
Special Transport Precautions: Protect from moisture and accidental dropping; avoid loading with incompatible chemicals (strong acids or oxidizers); upright storage for bulk bags recommended during shipping
Label Requirements: General chemical labeling only, transport placards not needed in most scenarios
Registration Status: Registered or notified for use in plastics in the EU (REACH), USA (TSCA), China, and Japan; consult local authorities for updated certifications
Safety, Health, and Environmental Regulations: Listed under chemical control laws for environmental release and workplace exposure
U.S. Regulations: Not listed as a hazardous air pollutant or RCRA hazardous waste; general dust regulations apply
Label Requirements: Proper product identification, contact details, precautionary instructions must appear on all workplace containers
International Agreements: Not covered by the Stockholm or Rotterdam Conventions; not classified as persistent organic pollutant
Workplace Classification: Safety Data Sheet required in industrial use, hazard training recommended for workers
Other Regulatory Notes: Complies with FDA and EU regulations for plastic additives in food contact plastic (when processed as directed; check batch certifications where needed)
