Knowledge
Material Safety Data Sheet: Hexaphenoxycyclotriphosphazene
1. Identification
Product Name: Hexaphenoxycyclotriphosphazene
Chemical Formula: (C6H5O)6P3N3
SYNONYMS: HPCP, Cyclotriphosphazene hexaphenoxy derivative
Recommended Use: Flame retardant, polymer additive, specialty chemical applications
Supplier: Chemical manufacturing companies handling flame retardant additives
Emergency Contact: Refer to local chemical emergency lines or company from which purchased
2. Hazard Identification
GHS Classification: Not classified as hazardous under current GHS criteria; exposure risks arise mainly through inhalation or dust contact
Label elements: No pictogram required, precautionary statements emphasize avoiding dust and ingestion
Health Effects: Eye, skin, and respiratory tract may get irritated after prolonged or repeated exposure
Environmental Effects: Limited data, may cause long-term adverse effects in aquatic environments if released
Routes of Exposure: Dust inhalation, skin contact, accidental ingestion during handling
3. Composition / Information on Ingredients
Chemical Name: Hexaphenoxycyclotriphosphazene
CAS Number: 1184-10-7
Purity: Common grades feature purity above 98%
Impurities: Trace amounts, if any, related to synthesis byproducts (u-phenol, oligomers)
Mixture/Single Substance: Single substance
4. First Aid Measures
Inhalation: Move affected person to fresh air, keep at rest; seek medical attention if symptoms persist
Skin Contact: Wash with plenty of water and soap; remove contaminated clothing; medical attention if rash/irritation develops
Eye Contact: Rinse thoroughly with water for 15 minutes, lifting eyelids occasionally; medical assistance if irritation continues
Ingestion: Rinse mouth, give water to drink; avoid inducing vomiting unless directed by a qualified medical worker; seek help right away
5. Fire-Fighting Measures
Suitable Extinguishing Media: Water spray, foam, dry chemical powder, or carbon dioxide
Unsuitable Extinguishing Media: Direct water jets may scatter powder and increase exposure risk
Hazardous Combustion Products: Produces toxic fumes involving phosphorus oxides, nitrogen oxides, and aromatic compounds under fire conditions
Protective Equipment for Firefighters: Positive pressure self-contained breathing apparatus and protective suit
Special Exposure Hazards: Combustion may release irritating or harmful vapors; avoid breathing smoke or fumes
6. Accidental Release Measures
Personal Precautions: Prevent dust formation, ensure proper ventilation, wear appropriate protective equipment
Environmental Precautions: Prevent spillage reaching drains or watercourses
Methods for Clean-Up: Sweep or vacuum spilt powder into containers for disposal using equipment with dust filters; avoid creating airborne dust clouds; decontaminate area with water
7. Handling and Storage
Handling: Minimize dust, use only in well-ventilated areas; avoid eating, drinking, or smoking near product; clean spatters and avoid skin contact
Storage: Keep in tightly closed containers, in a cool, dry, well-ventilated location away from incompatible materials like strong oxidizers, acids, and moisture
Incompatibility: Moisture and oxidizing agents can cause degradation or hazardous decomposition
Bulk Storage: Sheltered, labeled packaging with secondary containment recommended for bulk quantities
8. Exposure Controls and Personal Protection
Occupational Exposure Limits: No established limits for this compound
Engineering Controls: Local exhaust or fume hood recommended for powder handling; regular air quality monitoring in processing areas
Personal Protection: Chemical-resistant gloves, coveralls, closed shoes/boots, safety goggles or face shield recommended; NIOSH-approved dust mask or respirator if ventilation is poor
Hygiene Measures: Wash hands thoroughly after use and before eating; remove contaminated clothing and protective equipment before entering eating areas
9. Physical and Chemical Properties
Appearance: White to off-white crystalline powder
Odor: Odorless
Melting Point: 110–115°C
Boiling Point: Decomposes before boiling
Solubility: Practically insoluble in water; soluble in organic solvents like acetone, benzene, chloroform
Vapor Pressure: Negligible at ambient temperature
Density: Approximately 1.37 g/cm³
pH: Not applicable, insoluble in water
Other properties: Stable under normal temperatures and pressures, non-volatile
10. Stability and Reactivity
Stability: Chemically stable under normal use and storage conditions
Hazardous Reactions: Can react with strong oxidizers; prolonged exposure to moisture causes hydrolysis
Conditions to Avoid: Excessive heat, flame, oxidizing conditions, moist or humid storage
Incompatible Materials: Strong acids, alkalis, oxidizing agents
Hazardous Decomposition Products: Phosphorus oxides, nitrogen oxides, and aromatic phenols during strong heating or combustion
11. Toxicological Information
Acute Toxicity: Low acute toxicity by oral, dermal, or inhalation routes based on animal studies and published data
Skin Irritation: Mildly irritating with prolonged or repeated exposure
Eye Irritation: Dust may cause redness and irritation to the eyes
Respiratory Effects: Dust inhalation causes upper respiratory tract irritation
Skin Sensitization: No evidence suggesting allergic skin reactions
Chronic Toxicity: Long-term effects not fully established, but low risk indicated
Carcinogenicity, Mutagenicity, Reproductive Toxicity: Not classified for these endpoints based on available information
12. Ecological Information
Ecotoxicity: Not acutely toxic to aquatic life based on available studies; limited biodegradability may pose long-term risk if released in bulk
Persistence and Degradability: Degradation in the environment is slow; potential for bioaccumulation considered low
Mobility: Insoluble in water, binds to soil; unlikely to partition to groundwater
Bioaccumulative Potential: Structure suggests a low potential for bioaccumulation
Other Adverse Effects: Bulk release to environment discouraged; follow best practices on waste management
13. Disposal Considerations
Waste Handling: Collect residues in sealable containers; avoid dispersal of dust
Recommended Disposal Methods: Incineration at a chemical waste facility with proper emission controls preferred; disposal in approved landfill where safe incineration not possible
Contaminated Packaging: Triple rinse drums or containers before recycling or disposal; label as chemical waste
DO NOT: Release into sewers, public water sources, or natural habitats
14. Transport Information
UN Number: Not classified as hazardous for transport under UN Recommendations
Transport Hazard Class: Not regulated
Packing Group: Not applicable
Special Precautions: Prevent moisture ingress; secure packaging to avoid damage during transit
Proper Shipping Name: Hexaphenoxycyclotriphosphazene; transport as environmentally hazardous substance, solid, if large bulk shipment involved
15. Regulatory Information
International Inventories: Listed on major chemical inventories in USA (TSCA), EU (EINECS/REACH), Japan (ENCS), and China (IECSC)
SARA Title III (USA): Not subject to emergency planning requirements
OSHA Status: Not specifically regulated; general exposure limits for nuisance dust may apply
WHMIS (Canada): Not classified as hazardous
REACH Status (EU): Registration or notification may be required for large volume users
Other National Regulations: Compliance with chemical handling and environmental protection laws in destination country
Labeling: Label as 'industrial chemical'; identify dust hazard for workplace safety
