Product Name: Diphenylisooctyl Phosphite
CAS Number: 25550-98-5
Synonyms: Isooctyl diphenyl phosphite
Recommended Use: Stabilizer for plastics, antioxidant
Manufacturer: Contact supplier for details
Emergency Phone Number: Refer to local guidelines and national poison center
Address: Provided with purchase order or supplier database
Classification: Eye and skin irritant, possible respiratory irritant, not classified as carcinogenic by IARC
Hazard Statements: Causes skin and eye irritation, may cause respiratory discomfort
Signal Word: Warning
Pictograms: Exclamation mark (for irritant effects)
Precautionary Statements: Avoid inhalation of vapor or mist, wear protective gear, use in a well-ventilated space
Potential Health Effects: Short-term symptoms include redness, stinging or mild headaches with inhalation
Environmental Effects: Not acutely toxic, but may impact aquatic environments with prolonged exposure
Chemical Name: Diphenylisooctyl Phosphite
CAS Number: 25550-98-5
Percentage: 98-100% by weight
Impurities: Phosphoric acid derivatives less than 1%
Other Components: None considered hazardous according to prevailing regulations
Inhalation: Move to fresh air, monitor breathing, seek medical attention if cough or irritation persists
Skin Contact: Wash thoroughly with mild soap and water, remove contaminated clothing, seek medical advice if rash occurs
Eye Contact: Rinse gently with water for at least 15 minutes, keep eyelids open, consult an eye specialist
Ingestion: Rinse mouth, do not induce vomiting, drink water, get medical assistance if feeling unwell
Notes for Doctor: Treat symptomatically, monitor for respiratory distress
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, water spray
Unsuitable Media: Direct water jets may spread material
Hazardous Combustion Products: Phosphorus oxides, carbon oxides, unidentified organic fumes
Protective Equipment: Self-contained breathing apparatus and full protective clothing required for fire conditions
Specific Hazards: Material can produce irritating fumes if burned; containers may rupture with heat
Firefighting Instructions: Use water spray to cool equipment and containers; evacuate area if possible
Personal Precautions: Use protective gloves, safety goggles, face shield for large spills, avoid breathing dust, vapor, or mist
Environmental Precautions: Prevent material from entering sewers, waterways, or soil
Methods for Clean-Up: Absorb with inert materials (sand, diatomaceous earth), scoop up and place in labeled waste containers
Decontamination: Wash area with soap and water after removal
Disposal: Dispose of according to local, regional, or national regulations
Handling: Use only with adequate ventilation, avoid all unnecessary contact, keep away from food and drink, do not breathe mist or vapors
Storage Conditions: Store in tightly sealed containers in a cool, dry, well-ventilated location, keep away from incompatible substances such as strong oxidizers and acids
Incompatibilities: Avoid storing near oxidizing agents, strong acids, strong bases
Special Requirements: Maintain proper labeling, prevent static discharge, keep away from heat and flame
Occupational Exposure Limits: No specific OEL set; handle under standard industrial hygiene practices
Engineering Controls: Local exhaust ventilation, general dilution ventilation
Personal Protection: Chemical-resistant gloves (nitrile or neoprene), splash-proof safety goggles, long-sleeved clothing, face protection for larger quantities
Respiratory Protection: Use NIOSH-approved respirators if ventilation inadequate or mist present
Hygiene Measures: Wash hands before eating, drinking, or smoking, remove contaminated clothing promptly
Appearance: Clear, colorless to pale yellow liquid
Odor: Faint characteristic odor
Odor Threshold: Not established
pH: Not applicable (non-aqueous)
Melting Point/Freezing Point: Below -20°C
Boiling Point/Range: 370–400°C (estimated)
Flash Point: Above 210°C (closed cup)
Evaporation Rate: Below 1 (butyl acetate = 1)
Flammability: Combustible, not highly flammable
Explosive Limits: Not available
Vapor Pressure: Low at ambient temperature
Vapor Density: Greater than air
Relative Density: 1.04–1.08 g/cm³
Solubility: Insoluble in water, miscible with organic solvents
Partition Coefficient (n-octanol/water): Log Pow > 5
Auto-ignition Temperature: Not determined
Decomposition Temperature: Not determined
Viscosity: Slightly viscous at room temperature
Chemical Stability: Stable under recommended storage conditions, can hydrolyze if exposed to moisture
Possibility of Hazardous Reactions: May react with strong oxidizers, acids or bases
Conditions to Avoid: Excessive heat, open flames, contact with moisture or water
Incompatible Materials: Strong oxidizing agents, strong acids, alkalis, water or damp air
Hazardous Decomposition Products: May release phosphorus oxides, phenol, carbon oxides in the event of fire or decomposition
Acute Toxicity: Low oral and dermal toxicity expected based on chemical analog data
Skin Corrosion/Irritation: May cause mild to moderate irritation on contact
Serious Eye Damage/Irritation: Can cause temporary irritation, redness, or watering
Respiratory or Skin Sensitization: No evidence of sensitization under normal conditions
Chronic Toxicity: Long-term effects not well documented, no known carcinogenicity, mutagenicity, or reproductive toxicity
Routes of Exposure: Skin, eyes, inhalation of vapor or mist, accidental ingestion
Symptoms: Redness, itching, mild GI upset with ingestion, no known long-term adverse effects reported in literature
Medical Conditions Aggravated: Pre-existing skin and respiratory ailments may increase risk of irritation
Ecotoxicity: Not expected to pose significant acute toxicity to aquatic organisms at typical environmental concentrations
Persistence and Degradability: Not readily biodegradable, slow breakdown in soil and water possible
Bioaccumulative Potential: May accumulate in aquatic organisms due to high partition coefficient
Mobility in Soil: Low mobility in soil as a result of hydrophobic nature
Other Adverse Effects: Large releases may damage aquatic environments
Avoid Release: Prevent discharge into natural waterways to minimize risk to aquatic ecosystems
Disposal Methods: Incinerate or dispose of through licensed hazardous waste contractor
Contaminated Packaging: Wash thoroughly, dispose of as hazardous waste
Recommended Actions: Do not dump into sewers or municipal waste streams
Local Regulations: Follow CERCLA, RCRA, or analogous country-specific hazardous waste rules
Waste Codes: Contact local waste management authority for proper identification
UN Number: No classification assigned under existing ADR, IATA or IMDG codes for most grades
UN Proper Shipping Name: Not regulated for highway, air, or marine shipment in non-bulk packages
Transport Hazard Class(es): Not regulated
Packing Group: Not regulated
Environmental Hazards: Not designated as marine pollutant
Special Precautions: Secure tightly closed in secondary containment to prevent leaks or spills
U.S. TSCA: Listed
REACH (Europe): Registered or pre-registered substance
Canada DSL/NDSL: Listed
OSHA Hazards: Skin/eye irritant
SARA Title III: Not listed in Sections 302, 304, 313
California Proposition 65: Not listed
WHMIS Classification (Canada): Not controlled
Other Regulation Notes: Always check with up-to-date local, state and international regulations
