Cyclohexane

   CAS No.: 110-82-7
   Molecular Formula: C₆H₁₂
   Molecular Weight: ~84.16 g/mol
   Appearance: Colourless liquid with a detergent-like or petroleum-like odour.

Physicochemical Properties (Typical)

• Melting / Freezing Point: ~6.5 °C
• Boiling Point: ~80.7–81 °C at 1 atm
• Density: ~0.774 g/cm³ at 25 °C
• Flash Point (Closed Cup): ~−20 °C
• Solubility in Water: Negligible (insoluble)
• Vapour Density (Air = 1): ~2.9 (heavier than air)
• Explosive Limits in Air: ~1.3% to ~8% by volume

Purity & Quality Standards

• Commercial grades commonly offered at ≥99.0% purity (by GC).
• Appearance: Clear, colourless, free from visible particulate matter or turbidity.
• Provided with Certificate of Analysis (COA) for quality assurance.

Applications / Uses

• Major feedstock for the production of adipic acid and caprolactam, precursors to nylon production.
• Non-polar organic solvent for industrial and laboratory applications requiring low polarity.
• Used in heat-treating processes (as vapour) and in chemical intermediate operations.

Safety & Handling

• Highly flammable liquid and vapour — keep away from heat, sparks, open flames and hot surfaces.
• Inhalation: May cause dizziness, light-headedness or CNS effects.
• Skin Contact: May cause irritation; prolonged exposure may lead to drying or cracking.
• Eye Contact: Causes serious eye irritation.
• Precautions:
• Use only in well-ventilated areas or with local exhaust ventilation.
• Wear protective gloves, eye/face protection and flame-resistant clothing.
• Ground and bond containers during liquid transfer to prevent static discharge.
• Reactivity / Incompatibilities: Avoid strong oxidisers and heat exposure; vapour may accumulate and form explosive mixtures.
• First Aid:
• Inhalation: Move to fresh air and keep at rest; seek medical attention if symptoms persist.
• Skin Contact: Remove contaminated clothing and wash with soap and water.
• Eye Contact: Rinse thoroughly with water for several minutes; seek medical attention if irritation continues.
• Ingestion: Do not induce vomiting; obtain medical attention immediately.

Packaging & Storage

• Packaging: Supplied in sealed, solvent-compatible containers (e.g., steel drums or lined containers) suitable for flammable liquids.
• Storage Conditions: Store in a cool (< 30 °C), dry, well-ventilated area away from ignition sources, direct sunlight and incompatible materials. Keep containers tightly closed.
• Shelf Life: Stable under recommended conditions; inspect for any changes in appearance or odour before use.
• Transport: Classified as flammable liquid; handle in accordance with local and international transport regulations.