Benzene (C₆H₆)

  • CAS Number: 71-43-2
  • EINECS Number: 200-753-7
  • Chemical Formula: C₆H₆
  • Molecular Weight: 78.11 g/mol
  • Appearance: Colorless liquid with a sweet odor
  • Density: 0.879 g/cm³ (20°C)
  • Melting Point: 5.5°C
  • Boiling Point: 80.1°C
  • Flash Point: -11°C (Closed Cup)
  • Solubility: Slightly soluble in water; Miscible in organic solvents such as alcohol, ether, and chloroform
  • Water Solubility: 0.18 g/100 mL (20°C)
  • pH Value: Not applicable (neutral)
  • Packaging Specifications: 170 kg*80 drums, 13.6 tons/20′ FCL (container)
  • Preparation: Benzene is produced by catalytic reforming of petroleum naphtha or by coal carbonization.
  • Applications:
    • Synthetic Materials: Used in the production of synthetic fibers, plastics, and resins.
    • Solvent: Used as a solvent in the chemical and pharmaceutical industries for various applications, including paint and coatings.
    • Petrochemical Industry: Benzene is a key raw material in the production of styrene, cumene, cyclohexane, and other chemicals.
    • Lubricants: Used in the formulation of lubricants, rubber processing, and other industrial fluids.
    • Explosives: Benzene is involved in the production of explosives and other high-energy compounds.
  • Hazard Identification:
    • Flammability: Highly flammable liquid and vapor. Benzene poses a significant fire hazard.
    • Health Hazards: Prolonged exposure to benzene can cause central nervous system depression, dizziness, and headaches. It is a known carcinogen that may cause leukemia and other blood disorders.
    • Eye and Skin Irritation: May cause irritation to the eyes and skin. Repeated exposure can lead to dryness and cracking of the skin.
    • Inhalation Risks: Inhalation of high concentrations of benzene vapors can lead to dizziness, drowsiness, and loss of coordination. Long-term exposure may cause irreversible health effects.
    • Environmental Hazards: Benzene is toxic to aquatic life and may cause long-term damage to aquatic ecosystems if released into the environment.
  • Precautionary Statements:
    • Fire Prevention: Keep away from heat, sparks, open flames, and other ignition sources. Use explosion-proof electrical equipment and ensure proper ventilation when handling benzene.
    • Personal Protection: Wear protective gloves, eye protection, and face protection when handling benzene. Ensure adequate ventilation in work areas to avoid inhalation of vapors.
    • In Case of Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing and seek medical attention if irritation persists.
    • In Case of Inhalation: Move the person to fresh air immediately. Keep comfortable for breathing and seek medical attention if symptoms persist.
    • In Case of Skin Contact: Wash the affected skin with soap and water. Seek medical attention if irritation or rash develops.
    • If Swallowed: Call a poison center or doctor immediately. Do not induce vomiting unless directed by medical personnel.
    • Handling Spills: Eliminate all sources of ignition. Use inert materials to absorb the liquid and dispose of it in accordance with local environmental regulations.

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