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Name: Cyclohexanone
Chemical Formula: C6H10O
Appearance: Clear, colorless to pale yellow liquid; characteristic acetone-like odor
Common Uses: Solvent in adhesives, paints, and coatings; intermediate in production of nylon
Other Names: Pimelic ketone
GHS Classification: Flammable liquid, Acute toxicity (oral, inhalation, dermal), Eye irritation, Skin irritation, Specific target organ toxicity
Hazard Pictograms: Flame; Exclamation mark; Health hazard
Health Risks: Breathing vapors causes headache, dizziness, drowsiness, and nausea. Contact with skin and eyes stings and leaves redness.
Fire Risk: Vapors catch fire easily above 44°C; heavier than air so they collect in low spots.
Environmental Risk: Spills threaten aquatic life if they run off to waterways.
Chemical Name: Cyclohexanone
Concentration: About 99%
CAS Number: 108-94-1
Inhalation: Move to fresh air; get medical help if breathing feels difficult or someone faints.
Skin Contact: Boots, gloves and long sleeves reduce exposure, but wash off spills with plenty of soap and water.
Eye Contact: Rinse eyes carefully with water for several minutes; keep eyelids open; medical attention needed if irritation lingers.
Ingestion: Rinse mouth; never make anyone vomit; seek urgent medical advice.
Suitable Extinguishing Media: Alcohol foam, dry chemical powder, carbon dioxide.
Hazards During Fire: Vapors form explosive mixtures with air; toxic gases such as carbon monoxide pop up during burning.
Advice for Firefighters: Use full protective gear and self-contained breathing mask; cool closed containers with water spray to stop explosions.
Special Notes: Avoid spilling product into drains or sewers during fire-fighting.
Personal Protective Equipment: Wear chemical-resistant gloves, goggles, and a protective apron.
Environmental Precautions: Prevent product from reaching waterways; immediately inform the relevant authorities if contamination occurs.
Containment/Cleanup: Use inert absorbent material like sand or earth; shovel up waste into closed drums for safe disposal.
Ventilation: Open windows and doors or use mechanical ventilation to disperse vapors.
Spill Area Precautions: Keep unnecessary people away and eliminate all ignition sources.
Safe Handling: Use only in well-ventilated spaces; ground and bond containers to avoid static discharge.
Hygiene: Wash hands before breaks and when leaving work areas; no food, drinks or smoking near this chemical.
Storage Conditions: Keep in tightly closed containers in a cool, dry, and well-ventilated facility away from strong oxidizers.
Protection from Fire: Store away from heat, open flame, or other sources of ignition.
Exposure Limits: ACGIH TLV: 20 ppm TWA; OSHA PEL: 25 ppm TWA.
Engineering Controls: General room ventilation; local exhaust over processes that form vapors.
Personal Protective Equipment: Chemical splash goggles, gloves, flame-resistant lab coat; organic vapor respirator if limits risk being exceeded.
Workplace Practices: Avoid splashing and breathing vapors; do not let product touch bare skin or eyes.
Physical State: Liquid
Color: Colorless to pale yellow
Odor: Sweet, acetone-like
Boiling Point: 155.6°C
Melting Point: -47°C
Flash Point: 44°C (closed cup)
Vapor Pressure: 5 mmHg at 20°C
Density: About 0.95 g/cm3
Solubility: Slightly soluble in water; mixes with common organic solvents.
Autoignition Temperature: 420°C
Chemical Stability: Stays stable under normal storage and use.
Incompatible Materials: Strong oxidizing agents, strong acids, and bases.
Hazardous Reactions: Vigorous reactions if mixed with nitric acid or other oxidizers.
Decomposition Products: Carbon monoxide, carbon dioxide, possible toxic vapors in fire.
Acute Toxicity: Breathing in high levels can lead to dizziness, narcosis, and respiratory trouble; swallowing may trigger central nervous system effects.
Chronic Effects: Long-term exposure sometimes brings headaches, dermatitis, and possible liver/kidney damage.
Irritation: Liquid burns eyes and skin; vapor irritates eyes, nose, and throat.
Sensitization: Rare; few cases of skin allergy in industrial settings.
Carcinogenicity: Not classified as carcinogenic to humans (IARC).
Aquatic Toxicity: Harmful to fish and aquatic organisms at elevated concentrations.
Persistence and Degradability: Slowly breaks down in the environment, not prone to bioaccumulation.
Soil Mobility: Mobile; can leach into groundwater.
Other Effects: Large spills damage aquatic environments by reducing oxygen and disrupting life cycles.
Methods: Send waste to licensed chemical disposal centers; avoid pouring down the drain or into natural habitats.
Contaminated Packaging: Triple rinse empty drums; recycle or landfill per local regulations.
Regulatory Requirements: Must follow local and national rules for hazardous chemical disposal.
UN Number: 1915
Proper Shipping Name: Cyclohexanone
Hazard Class: 3 (Flammable Liquid)
Packing Group: III
Transport Precautions: Secure containers upright, keep away from foodstuffs and animal feed.
Special Notes: Emergency response crews should know the hazards of cyclohexanone in transit.
Workplace Exposure: Regulated as a hazardous chemical in most countries; occupational exposure limits apply.
Environmental Rules: Listed under hazardous air pollutants and subject to reporting if spills occur above certain volumes.
Labelling: Labels must show pictograms, hazard warnings, and safety instructions.
Worker Training: Staff must learn the risks and safe use practices for cyclohexanone before they work with it.
