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1,1,1-Trichloroethane
1,1,1-Trichloroethane
- CAS:
- 71-55-6
- MF:
- C2H3Cl3
- MW:
- 133.4
Properties
- Melting point:
- −35 °C(lit.)
- Boiling point:
- 74-76 °C(lit.)
- Density
- 1.336 g/mL at 20 °C(lit.)
- vapor density
- 4.6 (vs air)
- vapor pressure
- 100 mm Hg ( 20 °C)
- refractive index
- n
20/D 1.4366(lit.)
- Flash point:
- 11 °C
- storage temp.
- 0-6°C
- solubility
- Sparingly soluble in ethyl alcohol; freely soluble in carbon disulfide, benzene, ethyl ether, methanol, carbon tetrachloride (U.S. EPA, 1985), and many other organic solvents.
- form
- Fluid
- Water Solubility
- 1.4 g/L (20 ºc)
- Merck
- 13,9710
- Henry's Law Constant
- 2.77 at 40 °C, 4.27 at 50 °C, 6.31 at 60 °C, 7.91 at 70 °C, 8.98 at 80 °C (headspace-GC, Vane et al., 2001)
- Exposure limits
- TLV-TWA 350 ppm (～1900 mg/m3) (ACGIH, MSHA, and OSHA); TLV-STEL 450 ppm (～2450 mg/m3) (ACGIH); IDLH 1000 ppm (NIOSH).
- Dielectric constant
- 7.9（19℃）
- InChIKey
- UOCLXMDMGBRAIB-UHFFFAOYSA-N
- LogP
- 2.490
Safety Information
- Symbol(GHS)
GHS07
- Signal word
- Warning
- Hazard statements
- H420
- Precautionary statements
- P502
- Hazard Codes
- Xn,N,T,F
- Risk Statements
- 20-59-66-40-19-39/23/24/25-23/24/25-11-36/38
- Safety Statements
- 24/25-59-61-9-46-16-45-36/37-7-26
- OEL
- Ceiling: 350 ppm (1900 mg/m3) [15-minute] (Chloroethanes)
- RIDADR
- UN 2831 6.1/PG 3
- WGK Germany
- 3
- RTECS
- KJ2975000
- HazardClass
- 6.1(b)
- PackingGroup
- III
- HS Code
- 29031910
- Toxicity
- Acute oral LD50 for dogs 750 mg/kg, guinea pigs 9,470 mg/kg, mice 11,240 mg/kg, rats 10,300 mg/kg, rabbits 5,660 mg/kg (quoted, RTECS, 1985).
- IDLA
- 700 ppm
Use
1,1,1-Trichloroethane decomposes in the presence of chemically active metals. This includes aluminum, magnesium and their alloys. 1,1,1-Trichloroethane will react violently with dinitrogen tetraoxide, oxygen, liquid oxygen, sodium and sodium-potassium alloys. 1,1,1-Trichloroethane will also react violently with acetone, zinc and nitrates. 1,1,1-Trichloroethane can react with sodium hydroxide. 1,1,1-Trichloroethane is incompatible with strong oxidizers and strong bases. Mixtures with potassium or its alloys are shock-sensitive and may explode on light impact. 1,1,1-Trichloroethane can react with an aqueous suspension of calcium hydroxide, and with chlorine in sunlight. 1,1,1-Trichloroethane will attack some forms of plastics, rubber and coatings. Upon contact with hot metal or on exposure to ultraviolet radiation, 1,1,1-Trichloroethane will decompose to form irritant gases. A cobalt/molybdenum-alumina catalyst will generate a substantial exotherm on contact with its vapor at ambient temperatures. Hazardous reactions also occur with (aluminum oxide + heavy metals). .
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