10545-99-0

  • Chemical Name: Sulfur Dichloride
  • Synonyms: Sulfur Chloride, Dichlorosulfane, Chlorosulfenyl Chloride, Sulfurous Dichloride.
  • Molecular Formula: SCl₂
  • Molecular Weight: 102.97 g/mol.
  • CAS Number: 10545-99-0.
  • EINECS Number: 234-129-0

Physical Properties

  • Appearance: Dark red liquid with a pungent, irritating odor.
  • Density: 1.355 g/mL at 25°C.
  • Melting Point: -78°C.
  • Boiling Point: 60°C (decomposes).
  • Vapor Pressure: 22.66 kPa at 20°C.
  • Refractive Index: 1.570.
  • Solubility: Soluble in hexane, carbon tetrachloride, and benzene.
  • Stability: Stable at room temperature but decomposes when heated above 40°C.

Chemical Properties

  • Reactivity:
    • Decomposes in the presence of water to release sulfur and hydrochloric acid.
    • Reacts with excess sulfur trioxide to form thionyl chloride.
    • Can be reduced by metals to form chlorides and sulfides.
  • Decomposition: Releases toxic gases (e.g., hydrogen chloride, sulfur oxides) when heated or in contact with water.

Uses

  • Organic Synthesis: Used as a chlorinating agent and in the synthesis of sulfur compounds.
  • Rubber Industry: Used as a vulcanizing agent and adhesive.
  • Pesticides and Dyes: Used in the production of various pesticides and dyes.
  • Metallurgy: Used as an extractant for precious metals.

Safety and Hazards

  • Toxicity: Highly toxic; inhalation or contact with skin and eyes can cause severe irritation and burns.
  • Corrosivity: Strongly corrosive to metals, especially in the presence of moisture.
  • Storage: Store in a cool, dry, and well-ventilated area, away from water, oxidizers, and strong bases.
  • Emergency Handling: In case of a spill, use dry sand or dry chemical extinguishers; avoid using water.

Packing and shipping