Trichloromethane

• Category :

  Organic chemicals and Derivatives

• Synonyms :

  Chloroform;formyl trichloride;methane trichloride;methenyl trichloride;Methyl trichloride;R 20;r 20 (refrigerant);Refrigerant R20;trichloroform;

• CAS NO :

  67-66-3

• EC NO :

  200-663-8

• Molecular Formula :

  CHCl₃

• Molecular Weight :

  119.378

• Main Specifications :

• Product description :

  CAS No.: 67-66-3

  Molecular formula: CHCl3

  Molecular weight: 119.3779

  RTECS No.: FS9100000

  HS No.: 2903130000

  UN No.: 1888

  Hazard cargo No.: 61553

  IMDG Page: 6103

  I.Physicochemical properties:

  1. Appearance and property: Colorless transparent heavy liquid, easy to volatile, with special odor.

  2. Melting point: 635°C

  3. Boiling point: 61°C

  4. Liquid weight (D20°): 1.492

  5. Solubility: 8 G/L (20°C)   

  6. Flash point: 60.5-61.5°C

  7. Viscosity (20°C): 0.43mPa·s

  8. Refractive rate nD (20°C): 1.445

  9. Vapor density: 4.1 (vs air)

  10. Vapor pressure: 160mmHg (20°C)

  II. Usage

  Raw material for organic synthesis, mainly used in the production of Freon (F-21, F-22. F-23).

  Used in organic synthesis and anesthetic: as solvent of fat, rubber, resin, oils, wax, phosphorus, iodine; extractant of penicillin, essential oil, etc; inorganic phosphorus in measuring blood serum; detergent, etc.

  III. Quality standard

  Quality standardQ/YT003-2008

  Item	Index
  	Superior	First class	Qualified
  Mass fraction of trichloromethanea/%  ≥	99.95	99.90	99.80
  Mass fraction of carbon tetrachloride/%  ≤	0.04	0.08	0.20
  Mass fraction of water /% ≤	0.010	0.010	0.020
  Mass fraction of acid (Calculated by HCl) /% ≤	0.0004	0.0006	0.0010
  Color/Hazen unit (Pt-Co color No.)  ≤	10	15	25
  a the added stabilizer amount in not included in the mass fraction of trichloromethane

  IV. Precautions:

  Explosion limit of dichloromethane in the air: 8.1-17.2%, is combustible chemical product. With high concentration, long-term contact will cause dizziness, sleepiness, nausea, tinnitus or numb limb, will recover after moving to fresh air, can not cause lasting damage. Contact with eyes can cause pain and irritation, will cause dermatitis in case of long-term contact.    

  V. Packing, storage and transportation

  Hazard rank: 6.1 type toxic liquid

  Hazard cargo packing mark: 15

  Packing type: III

  Packing materials: Galvanized drum or close tank car

  Precautions: Should be stored in dry, cool and ventilated warehouse, avoid contacting with moisture. The transportation shall comply with the PRC road and railway transportation provision on hazard chemicals.

• Molecular Structure :