Dichloroethane

Product Details

CasNo： 1300-21-6

MF： C2H4Cl2

Appearance： liquid

Delivery Time： 15 days

Packing： 200kg/drum

Purity： 99%

Basic Information

• Chinese Name: 1,2 - 二氯乙烷（通常简称 “二氯乙烷”）
• English Name: 1,2-Dichloroethane (commonly referred to as "Dichloroethane")
• CAS No.: 107-06-2
• Molecular Formula: C₂H₄Cl₂
• Molecular Weight: 98.97
• Appearance: Colorless or pale yellow transparent liquid
• Odor: Chloroform-like odor

Physical and Chemical Properties

• Melting Point: -35℃
• Boiling Point: 83.5℃
• Density: 1.257 g/cm³ (at 20℃)
• Flash Point: 17℃ (closed cup)
• Solubility: Poorly soluble in water; miscible with organic solvents such as ethanol, ether, and chloroform.
• Chemical Properties: Stable under normal temperature and pressure, but poses a risk of combustion and explosion when exposed to high heat, open flames, or strong oxidants. Its vapor forms an explosive mixture with air and reacts violently with oxidants. When decomposed by high heat, it releases toxic and corrosive gases (e.g., hydrogen chloride). Additionally, it exhibits oxidation resistance and does not corrode metals.

Production Methods

1. Direct Chlorination of Ethylene:
   Ethylene reacts with chlorine in a 1,2-dichloroethane medium to generate crude 1,2-dichloroethane and a small amount of polychlorinated by-products. The finished product is obtained through a series of purification processes (e.g., washing, drying, and distillation).

2. Ethylene Oxychlorination:

   • Step 1: Ethylene reacts directly with chlorine to produce 1,2-dichloroethane.
   • Step 2: Hydrogen chloride (recovered from the cracking of 1,2-dichloroethane to produce vinyl chloride), preheated oxygen-containing gas (150–200℃), and ethylene react over a copper chloride catalyst supported on alumina.
   • The crude product is cooled, pressurized, and refined to obtain high-purity 1,2-dichloroethane.

Applications

1. Organic Synthesis Intermediate:

   • Serves as a key intermediate in the production of vinyl chloride.
   • Used in the manufacturing of oxalic acid, ethylenediamine, tetraethyl lead, polyethylenepolyamines, and benzil.

2. Solvent:

   • Acts as a solvent for wax, fats, rubber, and resins.
   • Used as a grain insecticide.
   • Added to leaded gasoline to improve the octane number.

3. Other Uses:

   • In the pharmaceutical industry: Used as a reaction solvent in the synthesis of certain drugs.
   • In the metal processing industry: Employed for degreasing and cleaning metal surfaces.

Safety Information

• Toxicity: Toxic and potentially carcinogenic. Ingestion or excessive inhalation may irritate the respiratory mucosa, causing symptoms such as coughing, sore throat, dizziness, and headache. High-concentration inhalation can lead to poisoning, resulting in nausea, vomiting, abdominal pain, diarrhea, and even liver and kidney damage or failure.
• Storage and Transportation:
  • Store in a cool, well-ventilated warehouse. Keep away from ignition sources and heat; the warehouse temperature should not exceed 30℃. Ensure containers are tightly sealed.
  • During transportation, ensure containers are leak-proof, non-collapsible, non-falling, and undamaged. Strictly prohibit mixing with oxidants, acids, alkalis, or other incompatible substances.
• Hazard Classifications:
  • Flammable Liquid (Category 3)
  • Acute Toxicity (Oral/Inhalation, Category 4)
  • Carcinogenicity (Category 2, suspected human carcinogen)
• UN Dangerous Goods Shipping Number: UN 1184 (Class 3 Flammable Liquid, Packing Group II)
• Protective Measures:
  • Wear acid-alkali resistant gloves, chemical safety goggles, and a gas mask (or self-contained breathing apparatus for high concentrations) during operation.
  • Avoid skin contact and vapor inhalation; ensure the workplace is well-ventilated.