Xylene (C₆H₄(CH₃)₂)

  • CAS Number: 1330-20-7
  • EINECS Number: 215-535-7
  • Chemical Formula: C₆H₄(CH₃)₂
  • Molecular Weight: 106.16 g/mol
  • Appearance: Colorless, sweet-smelling liquid
  • Density: 0.86 g/cm³ (20°C)
  • Melting Point: -47.4°C
  • Boiling Point: 138-144°C
  • Flash Point: 25°C (Closed Cup)
  • Solubility: Insoluble in water, miscible with alcohols, ethers, and other organic solvents
  • Water Solubility: 0.02 g/100 mL (20°C)
  • pH Value: Not applicable
  • Packaging Specifications: 200 kg/barrel, 170 kg/barrel
  • Preparation: Xylene is obtained from crude oil refining and as a by-product of coke production during steel manufacturing.

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  • Applications:
    • Industrial Solvent: Widely used in paints, coatings, varnishes, adhesives, and printing inks.
    • Chemical Intermediate: Used in the production of terephthalic acid (TPA) and dimethyl terephthalate (DMT), essential in polyester manufacturing.
    • Fuel Additive: Used to improve the octane number in gasoline.
    • Laboratory Uses: Commonly used in histology and pathology labs as a clearing agent.
    • Rubber and Leather Processing: Used in rubber compounding and leather treatment.
  • Hazard Identification:
    • Flammability: Highly flammable liquid and vapor. Can form explosive mixtures with air.
    • Health Hazards: Inhalation can cause dizziness, drowsiness, headaches, and central nervous system depression.
    • Eye and Skin Irritation: Direct contact may cause redness, irritation, or dryness.
    • Inhalation Risks: High exposure can lead to respiratory issues, nausea, and confusion.
    • Environmental Hazards: Toxic to aquatic life with long-lasting effects.

  • Precautionary Statements:
    • Fire Prevention: Keep away from heat, sparks, open flames, and hot surfaces. Use explosion-proof equipment.
    • Personal Protection: Wear protective gloves, goggles, and suitable clothing. Ensure proper ventilation when handling.
    • In Case of Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present. Seek medical attention if irritation persists.
    • In Case of Inhalation: Move to fresh air immediately. Seek medical attention if symptoms develop.
    • In Case of Skin Contact: Wash thoroughly with soap and water. If irritation occurs, seek medical attention.
    • If Swallowed: Do not induce vomiting. Rinse mouth with water and seek medical attention immediately.
    • Handling Spills: Eliminate all sources of ignition. Use absorbent material and dispose of according to local regulations.