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Product Name: Polycaprolactone
Chemical Formula: (C6H10O2)n
Synonyms: PCL, poly(epsilon-caprolactone)
Molecular Weight: Approx. 80,000 g/mol
Recommended Use: Biodegradable plastics, medical devices, 3D printing, adhesives, controlled drug delivery
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Emergency Contact: Relevant number provided by local authorities or chemical safety organization
CAS Number: 24980-41-4
Classification: Not classified as hazardous under GHS
Physical Hazards: Stable under standard conditions, forms dust during processing
Health Hazards: Low acute toxicity, dust may cause slight skin or respiratory irritation, heated fumes may irritate eyes or airways
Environmental Hazards: Not expected to cause long-term adverse effects in the environment but large quantities can disrupt local systems
Signal Word: Not applicable
Hazard Statements: May cause mechanical irritation (eyes, skin, respiratory tract) in particulate form
Precautionary Statements: Avoid breathing dust, use protective equipment during processing, ventilate area
Chemical Name: Polycaprolactone
CAS Number: 24980-41-4
Concentration: >99%
Impurities: Trace monomer residues may be present, no significant hazardous components at or above regulatory disclosure limits
Inhalation: Move person to fresh air, monitor for symptoms such as coughing or shortness of breath, seek medical attention if irritation persists
Skin Contact: Wash with soap and water, remove contaminated clothing, seek medical advice for persistent redness or irritation
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy to do, visit health facility if irritation continues
Ingestion: Rinse mouth, drink water, seek medical care if feeling unwell or if large amount consumed
Important Symptoms: Mechanical irritation, redness of skin and eyes, cough
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide
Unsuitable Extinguishing Media: Do not use high-pressure water jet
Specific Hazards: On combustion, emits carbon dioxide, carbon monoxide and possibly caprolactone monomers or fumes
Protective Equipment: Full protective gear including self-contained breathing apparatus
Special Precautions: Cool containers exposed to fire with water spray, avoid inhaling combustion products, use extinguishing methods appropriate for surrounding materials
Personal Precautions: Wear gloves, safety goggles, and dust mask if dust present
Environmental Precautions: Prevent entry into sewers or water systems, collect spilled material to avoid environmental release
Containment: Sweep up to avoid dust generation, place in suitable container for proper disposal
Cleaning Up: Wash spill area with plenty of water, ventilate area, dispose of contaminated sweepings following applicable regulations
Handling: Work in well-ventilated location, avoid generating or inhaling dust, handle molten polymer with care to avoid burns
Storage Conditions: Store in cool, dry area away from strong oxidizers, protect from sunlight and heat sources
Hygiene Practices: Wash hands after handling, remove dust-contaminated work clothing
Packing: Use airtight containers or bags that protect from moisture pickup and contamination
Incompatible Materials: Strong oxidizing agents, strong acids, alkalis
Exposure Limits: No specific occupational exposure limits set for PCL, maintain dust levels below established nuisance dust limits (e.g., OSHA PEL for particulates: 15 mg/m³ total dust, 5 mg/m³ respirable fraction)
Engineering Controls: Local exhaust ventilation during processing, especially where dust or fumes develop
Personal Protective Equipment: Safety glasses, gloves, dust mask or respirator when dust is likely, appropriate work clothing
Hygiene Measures: Wash hands after use, avoid eating, drinking or smoking in work area
Environmental Exposure: Use filters or scrubbers if emissions or effluents are released to the environment
Appearance: White to off-white granular or powdery solid
Odor: Practically odorless
pH: Not applicable
Melting Point: 58–65 °C
Boiling Point: Decomposes before boiling
Flash Point: > 200°C
Flammability: Not classified as highly flammable, but can burn
Vapor Pressure: Negligible at ambient temperature
Solubility: Insoluble in water, soluble in some organic solvents (e.g., chloroform, acetone)
Density: 1.1–1.2 g/cm³
Viscosity: Not applicable (solid state)
Decomposition Temperature: Above 240°C, generates irritating and/or toxic fumes
Chemical Stability: Stable under normal conditions, degrades slowly over time in presence of moisture
Reactivity: Not reactive at ambient temperature
Conditions to Avoid: Extreme heat, flame, strong acids, bases, and oxidizers
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, caprolactone, trace hydrocarbons
Polymerization: No hazardous polymerization expected under standard use or storage
Acute Toxicity: Not considered toxic, high molecular weight restricts absorption
Routes of Exposure: Inhalation of dust, skin contact, eye contact
Health Effects: Mild mechanical irritation possible to eyes, skin, and upper respiratory tract
Long-term Effects: Not identified in animal or epidemiological studies, essentially non-carcinogenic and non-mutagenic
Sensitization: No evidence of sensitization in humans or animals
Additional Data: Animal feeding studies show no adverse long-term effects at high doses
Ecotoxicity: Not expected to be hazardous, studies show minimal impact on aquatic organisms
Persistence and Degradability: Biodegradable by microorganisms, degrades to CO₂ and H₂O over months to years, rate increases in composting conditions
Bioaccumulation: Not expected due to slow degradation and low solubility
Mobility: Low water solubility leads to sediment binding, can fragment into microplastics if not properly contained
Other Effects: Avoid large discharges into the environment, disruption possible if large amounts accumulate
Disposal Methods: Dispose in accordance with local, regional and national regulations for non-hazardous waste
Recycling: Industrial composting suitable, incineration with energy recovery possible
Landfill: Acceptable for non-contaminated waste, slow degradation in anaerobic landfill
Special Precautions: Prevent release of significant quantities to waterways, do not burn in open areas to avoid toxic fumes
UN Number: Not regulated for transportation
Transport Hazard Class: Not classified as hazardous
Packing Group: Not assigned
Special Precautions: Protect against physical damage during transport, avoid contact with moisture
Environmental Hazards During Transport: Not anticipated unless product releases to waterways in significant amounts
Inventory Status: Listed in EINECS, TSCA, DSL and other chemical inventories
Labeling Requirements: Not classified as hazardous for labeling under GHS or OSHA
REACH Status: Exempt as a polymer, monomer substances registered as necessary
OSHA Regulations: Not regulated as a hazardous material
Other Regulations: Not subject to special restrictions under major chemical safety regulations, but local waste and environmental requirements apply
