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Trichloromethane

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.
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