Material Safety Data Sheet: Hydrocarbon Resins

1. Identification

Substance name: Hydrocarbon Resin
Chemical Class: Aliphatic and Aromatic Hydrocarbon Polymers
Trade Names: C5, C9, C5/C9 hybrid resins
Recommended Uses: Adhesives, Rubber Compounding, Inks, Paints, Coatings
Manufacturer/Supplier: Contact supplier or manufacturer for specific contact details
Emergency Contact: Regional Poison Control Center or supplier-provided hotline
Synonyms: Petroleum Resin, Thermoplastic Resin, Hydrocarbon Copolymer

2. Hazard Identification

Hazard Classification: Not classified as hazardous under GHS for most common grades, but dust or fume may irritate skin, eyes, or respiratory tract
Signal Word: Not applicable
Hazard Statement: May cause mild, temporary skin and eye irritation; inhalation of dust or fumes may cause discomfort or respiratory irritation; molten resin can cause severe burns
Pictograms: None required for solid grade; for molten, use burn risk symbol
Precautionary Statements: Avoid generating dust, avoid inhalation of fumes, use proper handling techniques to avoid burns from molten resin, wash hands after use
Health Hazards: No evidence of long-term systemic toxicity from occupational exposure, but short-term inhalation or direct contact can cause irritation

3. Composition / Information on Ingredients

Chemical Identity: Hydrocarbon Resin
CAS Number: 64742-16-1 (main base for C5 resin; C9 typically 68953-96-8; hybrid 9003-29-6, varies by grade)
Concentration: 100% hydrocarbon oligomers or polymers, trace amounts of residual monomers and oligomeric impurities possible
Impurities of Concern: Less than 1% aromatics or monomers in most commercial grades; possible traces of residual catalysts (outlined by manufacturer)
Other Ingredients: Antioxidants or stabilizers below 0.5% as added by manufacturer
Physical Form: Solid, typically yellow to amber pellets or granules (molten at elevated temperatures)

4. First Aid Measures

Inhalation: Move exposed person to fresh air; if respiratory discomfort persists, seek medical attention
Skin Contact: For contact with solid, wash with soap and water; if molten resin contacts skin, cool immediately with water, do not remove solidified resin, seek medical care
Eye Contact: Rinse eyes gently with plenty of water for at least 15 minutes, remove contact lenses if present, seek medical attention for irritation
Ingestion: Rinse mouth, do not induce vomiting, seek medical care
Critical Symptoms/Effects: Burns from molten material; irritation possible from dust or fume; report difficulty breathing or continued irritation to healthcare providers

5. Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, dry chemical, carbon dioxide, foam
Unsuitable Extinguishing Media: Direct water stream may spread molten resin
Fire Hazards: Resin may burn if ignited; produces dense black smoke, carbon monoxide, hydrocarbons
Special Hazards: Vapors and fumes from thermal decomposition can be irritating or toxic
Firefighter Protection: Use full protective clothing and self-contained breathing apparatus
Special Procedures: Cool containers exposed to fire with water spray, contain runoff to prevent environmental contamination

6. Accidental Release Measures

Personal Precautions: Avoid breathing dust or fumes; ventilate area; prevent skin and eye contact (wear gloves, safety goggles)
Environmental Precautions: Prevent release into water systems and drains; resin is insoluble but may create physical blockages
Containment Methods: Collect for reprocessing or disposal; shovel or sweep spilled solid resin; allow molten resin to cool before handling
Cleanup Procedures: Use non-sparking tools, place spill residue in suitable containers for disposal; wash area with water after all solid has been collected

7. Handling and Storage

Handling: Use local exhaust to control dust and fume; minimize generation of dust; avoid contact with molten material; wear protective gloves and eyewear
Storage: Keep in cool, dry, well-ventilated area; protect from sunlight and sources of ignition; avoid temperatures above 50°C; store away from oxidizing agents
Storage Incompatibility: Strong oxidizing agents; avoid contact with acids, alkalis, extreme heat
Special Handling: Take precautions against static discharge; ensure equipment is properly grounded for bulk transfers

8. Exposure Controls and Personal Protection

Exposure Limits: No specific OSHA/ACGIH exposure limits for hydrocarbon resin; use "nuisance dust" threshold (10 mg/m³ total dust, 5 mg/m³ respirable fraction)
Engineering Controls: Local exhaust ventilation for heated or dusty operations
Personal Protective Equipment: Safety glasses or goggles for eye protection, gloves for hand protection, long sleeves for molten resin, dust masks or respirators if dust or fume exposure is possible
Workplace Hygiene: Wash hands before eating or drinking; remove contaminated clothing and wash before reuse
Environmental Exposure: Prevent air and water emissions; implement secondary containment in storage and handling areas

9. Physical and Chemical Properties

Appearance: Yellow to light brown, glassy brittle solid (pellets, flakes, or granular)
Odor: Faint petroleum-like odor
Boiling Point: Decomposes before boiling
Melting Point: 80–150°C (varies with grade)
Solubility: Insoluble in water; soluble in most hydrocarbon solvents
Flash Point: Above 230°C (closed cup, varies by grade)
Vapor Pressure: Negligible at ambient temperatures
Specific Gravity: 0.95–1.10 (varies with type and grade)
Other Properties: Stable under normal conditions; softens and flows when heated; non-volatile at ambient conditions

10. Stability and Reactivity

Chemical Stability: Stable under recommended handling and storage conditions
Hazardous Reactions: No dangerous reaction under normal use; avoid strong oxidants or extreme heat
Decomposition Products: Burning or thermal decomposition yields carbon monoxide, carbon dioxide, hydrocarbons, and possible traces of aromatic compounds
Conditions to Avoid: Temperatures over 200°C, open flames, hot surfaces, sources of ignition
Incompatible Materials: Strong oxidizers, chlorine, peroxides

11. Toxicological Information

Acute Toxicity: Low oral and dermal hazard in standard animal testing; LD50 (oral, rat) above 2000 mg/kg
Skin/Eye Irritation: Possible slight skin and eye irritation at high doses or direct, repeated contact
Respiratory Effects: Dust or fume may cause coughing or irritation
Chronic Toxicity: No evidence of long-term toxic effects in humans; occupational health monitoring rarely indicates sensitization
Mutagenicity/Carcinogenicity: Not classified as mutagenic or carcinogenic by IARC, NTP, OSHA
Routes of Exposure: Inhalation (dust, fume), skin contact (molten)

12. Ecological Information

Ecotoxicity: Not toxic to aquatic life in standard test concentrations
Persistence and Degradability: Resin is not readily biodegradable; persists in environment as non-reactive solid
Bioaccumulation: Not likely to bioaccumulate due to high molecular weight and insolubility in water
Mobility: Immobile in soil and water; floats or settles as a solid
Other Environmental Impact: Large spills can cause physical hazards to wildlife; risk of stormwater blockage in pellet form

13. Disposal Considerations

Waste Disposal: Dispose of as nonhazardous solid waste; follow local, state, and federal regulations
Recycling/Reuse: Material can often be reclaimed for energy or raw material recovery
Special Instructions: Avoid discharge to water bodies or sewers; incinerate in permitted facilities if recycling is not possible
Contaminated Packaging: Dispose of empty containers as industrial waste unless clean for recycling

14. Transport Information

UN Number: Not classified as a hazardous material for transportation
Transport Hazard Class: None assigned
Packing Group: Not applicable
Proper Shipping Name: Hydrocarbon Resin, Non-hazardous
Special Precautions: Avoid exposure to strong heat or sources of ignition during transit; prevent packaging damage to avoid pellet releases

15. Regulatory Information

International Regulations: REACH (EU): Registered substances, complies with EU regulations on polymers; TSCA (US): All ingredients listed or exempt
OSHA Status: Non-hazardous chemical; falls under general industry safety standards
WHMIS (Canada): Not classified as controlled product
Other Agencies: Not subject to reporting under CERCLA, EPCRA, or SARA 313; no California Proposition 65 chemicals known present
Industry Guidance: Follow good industrial practices for handling and disposal, obtain specific statements from resin supplier to ensure full regulatory compliance by grade