Product Name: Polycarbonate Diol
Chemical Family: Aliphatic Polycarbonate Diol
Synonyms: None
Recommended Use: Ingredient for polyurethane production, coatings, elastomers
Supplier Details: Manufacturer name, address, and emergency contact number
CAS Number: 145735-31-3
EC Number: Not available
Relevant Identified Uses: Use in industrial manufacturing, laboratory research
Restrictions on Use: Avoid use outside of recommended industrial processes
Physical Hazards: Polycarbonate diol does not ignite easily, presents minimal explosion risk, and lacks significant dust hazards. The product can swell and degrade after exposure to strong oxidizers.
Health Hazards: Low acute oral and dermal toxicity reported on standard testing. Short-term exposure causes slight eye and skin irritation. Inhalation of dust or vapor at high temperatures results in mild upper respiratory tract irritation.
Label Elements: Not classified for acute toxicity under GHS. Requires caution statements regarding dust and fumes.
Environmental Hazards: Not classified as hazardous to the aquatic environment based on data for polycarbonate oligomers. Chronic toxicity to aquatic life remains low.
Signal Word: Caution
Precautionary Statements: Avoid inhalation of vapors. Minimize skin contact. Good industrial hygiene practices recommended.
Chemical Name: Polycarbonate Diol
Percentage Range: 98–100% by weight
Additives: Trace stabilizers and residual monomers (<0.2%)
Hazardous Components: None at reportable concentrations
Impurities: Less than 1% remaining cyclic carbonate, well below regulated reporting thresholds
Inhalation: Move affected person to fresh air. Seek medical attention if respiratory symptoms persist or worsen.
Skin Contact: Remove contaminated clothing. Wash affected area with plenty of soap and water. Offer medical attention for irritation.
Eye Contact: Rinse eyes cautiously with water for several minutes. Remove contact lenses if possible, then continue rinsing. Obtain medical advice if irritation continues.
Ingestion: Rinse mouth. Do not induce vomiting. If substantial material is swallowed, seek medical attention for supportive care.
Recommended Medical Care: Treat based on symptoms. No known antidotes. Observe for delayed reactions or persistent discomfort.
Suitable Extinguishing Media: Use water spray, foam, dry chemical, or carbon dioxide. Direct jets may spread dust in some forms.
Unsuitable Extinguishing Media: Avoid high-pressure water streams that may disperse dust or melt.
Specific Hazards: Heating to decomposition releases carbon oxides and small amounts of toxic vapors.
Protective Equipment for Firefighters: Full bunker gear and self-contained breathing apparatus will give protection from smoke and fumes.
Advice for Firefighters: Cool containers exposed to flames. Contain runoff to prevent entry into drains.
Personal Precautions: Wear suitable gloves, safety glasses, and dust mask to minimize exposure. Avoid raising dust.
Environmental Precautions: Block entry to waterways and storm drains. Clean up immediately to prevent environmental impact.
Methods for Containment: Stop further spillage and divert away from sensitive zones.
Cleaning Methods: Sweep or shovel up spilled material for recovery or disposal. Wash area thoroughly with water after material removal.
Notification Procedures: Report significant releases to appropriate authorities following local regulations.
Precautions for Safe Handling: Use in well-ventilated areas. Minimize dust formation and accumulation. Wear personal protective equipment suitable for the task.
Hygiene Practices: Wash exposed skin before eating, drinking, or smoking. Maintain clean work environment.
Storage Conditions: Store at 5–40°C in sealed containers. Avoid strong oxidizers and incompatible substances.
Incompatibilities: Do not store with acids, bases, or materials that may cause degradation.
Packaging Materials: Use dedicated containers of HDPE, stainless steel, or glass to avoid contamination.
Exposure Limits: No established workplace exposure limits for polycarbonate diol. Maintain workplace levels as low as reasonably achievable.
Engineering Controls: Use local exhaust ventilation and process enclosures where dust or fumes could be generated.
Personal Protective Equipment: Safety glasses with side shields will protect eyes. Impervious nitrile or PVC gloves recommended. Wear long-sleeved clothing.
Respiratory Protection: Use NIOSH-approved dust masks when handling powders. For heated processing or high dust, use full-face respirators.
Environmental Controls: Implement procedures to manage spilled material and working area cleanliness.
Appearance: White to off-white solid or granular substance
Odor: Mild, little or no odor
Odor Threshold: Not established
pH: Not available
Melting Point / Freezing Point: Between 35°C and 130°C depending on grade
Boiling Point: Decomposes above 250°C
Flash Point: >200°C (closed-cup method)
Evaporation Rate: Negligible at room temperature
Flammability: Not classified as flammable
Vapor Pressure: Below detection limits at ambient conditions
Vapor Density: Not applicable
Solubility: Insoluble in water; soluble in many organic solvents
Partition Coefficient (n-octanol/water): Not determined
Auto-ignition Temperature: >350°C
Decomposition Temperature: >250°C
Viscosity: Depends on molecular weight, typically 500–5,000 cP at 50°C
Chemical Stability: Stable under recommended conditions and expected uses
Reactivity: Does not undergo rapid or uncontrolled reactions in normal environments
Conditions to Avoid: Strong acids, bases, oxidizing agents, and extreme temperatures
Hazardous Decomposition Products: Combustion produces carbon monoxide, carbon dioxide, and trace fumes
Polymerization Risk: Not expected to polymerize or form hazardous by-products during storage or processing
Acute Toxicity: Oral LD50 in rats exceeds 2,000 mg/kg; not toxic by conventional criteria
Dermal Toxicity: No significant adverse outcomes seen in rabbit studies
Inhalation: Minimal irritation at high exposure levels
Skin Corrosion/Irritation: Causes mild, transient irritation on direct contact
Serious Eye Damage/Irritation: May cause short-lived irritation upon eye exposure
Respiratory Sensitization: Does not sensitize airways in routine animal or human testing
Germ Cell Mutagenicity: No evidence of genetic toxicity in standard bacterial or mammalian tests
Carcinogenicity: Not listed as a probable carcinogen by NTP, IARC, or OSHA
Reproductive Toxicity: Not linked to reproductive or developmental effects in animal studies
Specific Target Organ Toxicity: No target organ toxicity identified
Aquatic Toxicity: Polycarbonate diol remains poorly soluble and exhibits low acute aquatic toxicity. LC50 (fish, 96h) generally exceeds 100 mg/L.
Bioaccumulation Potential: Low risk based on polymeric structure and limited environmental mobility.
Persistence and Degradability: Hydrolyzes slowly in natural environments. Non-biodegradable under standard testing but fragmented over extended periods.
Mobility in Soil: Limited leaching potential observed, product binds to soil particulates.
Other Adverse Effects: No ozone depletion effect. Indirect impact through improper disposal sometimes possible.
Waste Treatment Methods: Collect and send to approved waste disposal facility. Chemical incineration suitable with controls for decomposition gases.
Disposal of Containers: Empty packaging may retain residue; triple rinse and offer for recycling or landfill.
Precautions: Keep away from drains, surface water, and soils. Disposal must follow local environmental requirements.
Special Instructions: Do not reuse containers for food, feed, or potable water storage.
UN Number: Not classified as hazardous for transport
UN Proper Shipping Name: Not regulated under ADR, RID, IMDG, or IATA
Transport Hazard Class: Not applicable
Packing Group: Not applicable for road, sea, or air shipment
Environmental Hazards: Polycarbonate diol does not present regulated environmental risk during shipping
Special Precautions: Protect containers from physical damage and moisture exposure during transit
OSHA: Not regulated as hazardous chemical under OSHA Hazard Communication Standard
TSCA: Listed on the US Toxic Substances Control Act inventory
REACH: Pre-registered or registration exempt under REACH as a polymer
Label Information: Observe precautionary labelling for dust and eye protection
Other National/International Regulations: Complies with major chemical inventory requirements globally. Not falling under specific Canadian WHMIS or Australian AICS concern.
Restrictions: Professional and industrial users advised to monitor for regulatory updates as product standards evolve
