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Product Name: Terpinolene
Chemical Formula: C10H16
Other Identifiers: 1,4-Methano-1H-indene, 4,7,7-trimethyl-, Terpinolene Technical Grade, Terpinolene Natural
Recommended Uses: Component in fragrances and flavors, solvent, chemical intermediate
Supplier Information: Chemical manufacturer contact details, emergency phone number
UN Number: 2319 (Terpene hydrocarbons, n.o.s.)
Classification: Flammable liquid (Category 3), Acute toxicity oral (Category 5), Skin irritation (Category 2), Eye irritation (Category 2A), Hazardous to aquatic environment, chronic (Category 2)
Signal Word: Warning
Hazard Statements: May cause skin irritation, may cause eye irritation, may cause allergic skin reaction, toxic to aquatic life with long-lasting effects, flammable liquid and vapor, harmful if swallowed
Pictograms: Flame, exclamation mark, environment
Precautionary Statements: Keep away from heat and open flames, wash hands thoroughly after handling, avoid release to the environment, wear protective gloves and eye/face protection, avoid breathing vapors
Substance: Terpinolene
Chemical Identity: 1,4-methano-1H-indene, 4,7,7-trimethyl-
CAS Number: 586-62-9
EC Number: 209-578-0
Purity: ≥95%
Impurities: May contain trace amounts of other terpene hydrocarbons
Inhalation: Move person into fresh air immediately, keep them at rest, seek medical attention if symptoms develop such as coughing, choking, or dizziness
Skin Contact: Remove contaminated clothing, wash exposed skin with plenty of soap and water, do not use solvents or thinners, seek medical attention for persistent irritation
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses if present and easy to do, seek medical attention if irritation persists
Ingestion: Do not induce vomiting, rinse mouth, never give anything by mouth to an unconscious person, seek immediate medical attention
Symptoms and Effects: Redness, itching, dermatitis, headache, drowsiness, nausea, respiratory difficulty in severe cases
Advice to Physicians: Treat symptomatically, provide supportive care, monitor respiratory and cardiac function
Suitable Extinguishing Media: Water spray, alcohol-resistant foam, dry chemical powder, carbon dioxide
Unsuitable Media: Do not use water jet due to risk of spreading flames
Specific Hazards: May form flammable vapor-air mixtures, emits toxic fumes under fire conditions (carbon oxides)
Protective Equipment for Firefighters: Full protective clothing, self-contained breathing apparatus
Special Procedures: Cool exposed containers with water spray, prevent runoff from entering drains or surface water, evacuate area if large fire
Explosion Hazard: Vapors may travel a considerable distance to a source of ignition and flash back
Personal Precautions: Evacuate area, eliminate all ignition sources, ventilate area, avoid inhaling vapors, wear appropriate respiratory protection
Environmental Precautions: Prevent substance from entering drains, surface and ground water, and soil; notify local authorities if large spills reach water
Clean-up Methods: Absorb spill with inert material like sand or earth, collect in suitable non-sparking containers for disposal, wash spill site after material pick-up
Methods for Containment: Dike and contain spill, minimize spreading, use non-sparking tools
Handling: Use in well-ventilated areas, ground and bond containers when transferring, avoid contact with skin and eyes, avoid breathing vapors, wash thoroughly after handling
Storage: Store in tightly sealed containers, keep away from heat sources, sparks, and open flames, store in a cool, dry, well-ventilated place, segregate from oxidizing agents and acids, keep away from food and drink
Special Storage Requirements: Use explosion-proof electrical equipment, label containers clearly, regular inspection for leaks or deterioration
Occupational Exposure Limits: No established OSHA or ACGIH exposure limits for terpinolene; general terpene exposure limits may apply or require risk-based assessment
Engineering Controls: Use local exhaust ventilation, general ventilation, maintain concentrations below exposure limits
Personal Protective Equipment: Chemical-resistant gloves (nitrile, neoprene), safety goggles or face shield, flame-resistant lab coat, impervious footwear
Respiratory Protection: Appropriate NIOSH/MSHA-certified respirator if engineering controls do not keep levels below exposure limit
Hygiene Measures: Wash hands, face, and exposed skin before eating, drinking, or smoking; remove contaminated clothing and wash before reuse
Appearance: Colorless to pale yellow liquid
Odor: Piney, citrus, herbal, sweet
Odor Threshold: Not available
pH: Not applicable
Melting Point: -44°C
Boiling Point: 183°C
Flash Point: 48°C (closed cup)
Evaporation Rate: Not available
Flammability: Flammable liquid and vapor
Explosion Limits: Lower: approx. 0.7% vol, Upper: approx. 6.0% vol
Vapor Pressure: 1.7 mmHg at 25°C
Vapor Density: 4.7 (air = 1)
Relative Density: 0.858 g/cm³ at 25°C
Solubility: Practically insoluble in water, miscible with ethanol, ether, oils
Partition Coefficient (n-octanol/water): Log Kow: 4.5
Viscosity: Not available
Auto-ignition Temperature: Above 220°C
Molecular Weight: 136.24 g/mol
Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Reacts with strong oxidizers, strong acids
Hazardous Reactions: Exothermic polymerization not expected under normal conditions
Conditions to Avoid: Heat, flames, sparks, electrostatic discharge, sunlight, open containers
Incompatible Materials: Oxidizing agents, strong acids, halogens
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, irritating vapors and gases under thermal decomposition
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Low acute toxicity, LD50 (oral, rat): >5000 mg/kg; LD50 (dermal, rabbit): >5000 mg/kg
Skin Corrosion/Irritation: Causes moderate skin irritation
Serious Eye Damage/Irritation: Causes moderate eye irritation
Respiratory or Skin Sensitization: May cause allergic skin reactions
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, OSHA
Mutagenicity: No data indicating mutagenic effects
Reproductive Toxicity: Not expected to cause reproductive or developmental toxicity
STOT (Specific Target Organ Toxicity) - Single Exposure: May cause drowsiness or dizziness at high vapor concentrations
Other Effects: Prolonged or repeated exposure may cause dermatitis
Ecotoxicity: Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Aquatic Toxicity Data: LC50 (fish, 96h): approximately 20 mg/L; EC50 (daphnia, 48h): approximately 2.4 mg/L
Persistence and Degradability: Biodegradable but may persist in sediment in absence of oxygen
Bioaccumulative Potential: High potential for bioaccumulation (log Kow > 4)
Mobility in Soil: Low mobility; binds to soil and organic matter
Other Adverse Effects: May cause oxygen depletion in aquatic systems due to microbial degradation
Disposal Methods: Dispose of in accordance with local, regional, national, and international regulations; send waste to approved chemical disposal facility
Container Disposal: Empty containers may retain product residue; treat containers as hazardous waste, do not reuse containers
Precautions: Avoid release to the environment, do not pour into drains or water courses
RCRA Waste Code: Not specifically listed, may be considered ignitable hazardous waste (D001) under US regulations
UN Number: 2319
UN Proper Shipping Name: Terpene hydrocarbons, n.o.s. (Terpinolene)
Transport Hazard Class: 3 (Flammable liquids)
Packing Group: III
Hazard Labels: Flammable liquid
Marine Pollutant: Yes
Special Precautions for User: Use approved containers, ensure vehicles are properly placarded, prevent spills during transport, comply with local transport regulations
TSCA Status (US): Listed
REACH Status (EU): Registered under EC No 1907/2006
OSHA Hazard Communication: Classified as hazardous
California Proposition 65: Not listed as carcinogen or reproductive toxicant
SARA Title III/Sec 313: Not subject to reporting under SARA Section 313
Other Regulations: Subject to chemical accident prevention provisions, reportable under CERCLA for major spill, requires safety data sheet and hazard communication per GHS/CLP
Workplace Exposure Regulations: General duty to control exposures under occupational health and safety laws on flammable and hazardous chemical use
