© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Product Name: Cyclohexene Oxide
Chemical Name: 1,2-Epoxyclohexane
CAS Number: 286-20-4
Recommended Use: Laboratory chemical, chemical synthesis
Manufacturer: Refer to supplier-specific MSDS
Emergency Phone Number: Refer to national poison or chemical safety hotlines
Synonyms: Oxirane, cyclohexyl-, Cyclohexylene oxide
Molecular Formula: C6H10O
Molecular Weight: 98.14 g/mol
GHS Classification: Flammable liquid, Skin corrosion/irritation, Eye irritation, Specific target organ toxicity - single exposure
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage, May cause respiratory irritation, Flammable liquid and vapor, Harmful if inhaled or swallowed
Pictograms: Flame, Corrosive, Health hazard
Precautionary Statements: Wear protective gloves, protective clothing, eye and face protection, avoid breathing vapors, use only outdoors or in a well-ventilated area, keep away from heat, sparks, open flames
Routes of Exposure: Inhalation, skin and eye contact, ingestion
Effects of Overexposure: Eye, skin, and respiratory tract irritation, burns, central nervous system effects
Chemical Identity: Cyclohexene oxide
Synonyms: 1,2-Epoxicyclohexane
Concentration: 98% or higher
Chemical Formula: C6H10O
CAS Number: 286-20-4
Impurities: Trace amounts of cyclohexenol, cyclohexanone, water
Molecular Structure: A six-membered ring with an epoxy (oxirane) functional group
UN Number: UN1993 (for transport of flammable substances)
Inhalation: Move person to fresh air immediately, loosen clothing, keep airway clear, provide oxygen if breathing is difficult, get medical attention without delay
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and plenty of water for at least 15 minutes, seek medical assistance for persistent irritation or burns
Eye Contact: Rinse eyes cautiously with water for at least 15 minutes, lifting upper and lower eyelids occasionally, remove contact lenses if present, continue rinsing, obtain immediate medical attention
Ingestion: Rinse mouth thoroughly, do not induce vomiting, seek immediate medical advice, never give anything by mouth to an unconscious person
Advice to Physician: Treat based on symptoms, monitor for respiratory distress, supportive care as indicated
Suitable Extinguishing Media: Use alcohol-resistant foam, dry chemical, or carbon dioxide, water spray may cool containers but may not extinguish fire
Specific Hazards: Vapors are heavier than air and may travel to a source of ignition, combustion produces toxic fumes such as carbon monoxide and carbon dioxide
Protective Equipment for Firefighters: Wear self-contained breathing apparatus (SCBA) and full protective gear, keep upwind, avoid inhaling combustion products
Special Procedures: Approach fire from upwind, use water spray to cool unopened containers, avoid water runoff into sewer or waterways, evacuate area if necessary
Unusual Fire/Explosion Hazards: Vapors may form explosive mixtures with air, flashback possible along vapor trail, containers may rupture violently if heated
Personal Precautions: Evacuate unnecessary personnel, ventilate area, avoid inhalation of vapors, prevent skin and eye contact by wearing recommended PPE
Environmental Precautions: Prevent further leakage or spillage if safe to do so, do not let product enter drains, soil, or natural waterways, warn others in immediate area
Containment Methods: Contain spill with non-combustible absorbent materials such as sand, earth, or vermiculite, collect and transfer to waste containers for disposal
Cleanup Procedures: Clean contaminated surface thoroughly, avoid raising dust or aerosols, dispose of collected material according to local regulations, decontaminate area after cleanup
Precautions for Safe Handling: Work in a well-ventilated area, keep away from ignition sources, avoid splashes or spills, do not breathe vapor or mist, handle with chemical-resistant gloves, wear eye and face protection, follow good industrial hygiene practices
Storage Conditions: Keep container tightly closed in a dry, cool, well-ventilated place, store away from incompatible substances such as strong acids, bases, and oxidizers, containers should be appropriately labeled, avoid direct sunlight and heat sources
Packaging Materials: Use original chemical-resistant containers, ensure compatibility of container material with product, secondary containment recommended
Other Practices: Store away from food, drink, and animal feed, keep out of reach of children and untrained personnel
Occupational Exposure Limits: No established OSHA, ACGIH, or NIOSH exposure limits; minimize exposure as much as possible via substitution and engineering controls
Engineering Controls: Use fume hood, local exhaust ventilation, closed systems, or other methods to control exposure, ensure eyewash stations and safety showers are accessible
Personal Protective Equipment: Wear safety goggles or face shield, chemical-resistant gloves (nitrile or neoprene), lab coat or apron, and suitable respiratory protection if ventilation is insufficient
Hygiene Measures: Wash hands, forearms, and face thoroughly after handling, do not eat, drink, or smoke during use
Environmental Controls: Do not allow product to contaminate the environment, monitor workplace air quality regularly
Appearance: Colorless liquid
Odor: Mild, ether-like
Odor Threshold: Not determined
pH: Not available
Melting Point: -61°C
Boiling Point: 131–133°C
Flash Point: 30–32°C (closed cup)
Evaporation Rate: Not determined
Flammability: Flammable liquid
Flammable Limits: Lower: 1.2%, Upper: 7.0% (estimated)
Vapor Pressure: 12 mmHg at 25°C
Vapor Density: Approx. 3.4 (air = 1)
Relative Density: 0.94–0.97 g/cm³
Solubility: Slightly soluble in water, miscible with organic solvents
Partition Coefficient (log Kow): 0.85 (estimated)
Auto-ignition Temperature: 450°C (estimated)
Decomposition Temperature: Not available
Viscosity: Not available
Chemical Stability: Stable under normal temperatures and pressures, sensitive to prolonged exposure to heat, light, and moisture
Reactivity: Reacts with acids, bases, strong oxidizers, and reducing agents, may polymerize if unprotected
Hazardous Reactions: Exothermic polymerization possible in the presence of catalysts such as acids or alkalis
Decomposition Products: Carbon oxides, unidentified organic compounds may form during combustion or decomposition
Conditions to Avoid: Heat, flames, ignition sources, moisture, strong acids and bases, oxidizers
Incompatible Materials: Strong acids, strong bases, oxidizing/reducing materials, amines, alcohols
Acute Toxicity: Oral LD50 (rat): approx. 750 mg/kg, dermal LD50 (rabbit): approx. 2900 mg/kg, inhalation LC50 (rat): not precisely known, vapor is irritating to eyes and respiratory tract
Skin Corrosion/Irritation: Causes severe irritation and burns
Eye Damage/Irritation: Can cause severe damage, risk of permanent injury
Respiratory Sensitization: May trigger respiratory tract irritation
Other Possible Effects: May depress central nervous system, symptoms include nausea, headache, dizziness
Chronic Effects: No data indicating carcinogenicity, mutagenicity, teratogenicity from regulatory agencies such as IARC, NTP, OSHA
Routes of Exposure: Inhalation, skin, eyes, ingestion
Target Organs: Respiratory system, eyes, skin
Other Information: Prolonged or repeated contact may cause dermatitis or sensitization
Ecotoxicity: Toxic to aquatic life at high concentrations, potential for bioaccumulation is low
Persistence/Degradability: Readily biodegradable under aerobic conditions in soil and water, not expected to persist under normal circumstances
Bioaccumulative Potential: Low bioaccumulation, partition coefficient (log Kow) indicates minimal build-up in organisms
Mobility in Soil: May migrate in the upper soil layer, moderate mobility potential, risk of groundwater contamination if large amounts are released
Environmental Fate: Expected to volatilize from soil and surface waters, limited fate data available
Other Adverse Effects: Harmful to aquatic organisms if directly released, do not allow entry into drains, soil, or watercourses
Disposal Methods: Burn in a chemical incinerator equipped with afterburner and scrubber, follow federal, state, and local regulations, do not allow material to be released to environment
Contaminated Packaging: Rinse container thoroughly, triple rinse preferred, puncture and dispose according to regulations
Precautions: Wear appropriate PPE during waste handling, ensure proper labeling and documentation, consult local authorities for appropriate facilities
Waste Codes: Consult national or local hazardous waste codes, likely considered hazardous waste due to ignitability
UN Number: UN1993
Proper Shipping Name: Flammable liquids, n.o.s. (Cyclohexene oxide)
Transport Hazard Class: 3 (Flammable Liquid)
Packing Group: II
Labels Required: Flammable liquid label
Special Precautions for User: Keep away from sources of ignition during transport, transport in tightly sealed, upright containers, avoid rough handling
Environmental Hazards: Not classified as a marine pollutant, minimize risk of spills during transport
Additional Information: Comply with IMDG, IATA, DOT, ADR transport requirements, documentation should match all applicable regulations
OSHA Regulatory Status: Regulated as a hazardous chemical in the United States under OSHA Hazard Communication Standard
TSCA Inventory: Listed
SARA Title III: Not listed as an extremely hazardous substance, but may be subject to reporting under hazardous chemical listing
RCRA Status: May be considered a hazardous waste if discarded, due to ignitability
California Proposition 65: Not listed as a known carcinogen or reproductive toxin
WHMIS (Canada): Classified as Class B2 (Flammable liquid), D2B (Toxic materials causing other effects)
REACH (EU): Registered substance, subject to restrictions and authorization requirements
Other Regulations: Notified under EINECS/ELINCS in Europe, check specific national/international regulations for additional requirements
Labeling Requirements: GHS-compliant hazard and precautionary statements, appropriate pictograms, supplier information
