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Name Trichloroethylene
CAS 79-01-6
EINECS(EC#) 201-167-4
Molecular Formula C2HCl3
MDL Number MFCD00000838
Molecular Weight 131.39
MOL File 79-01-6.mol

Chemical Properties

Appearance Trichloroethylene, a colorless (often dyed blue), nonflammable, noncorrosive liquid that has the “sweet” odor characteristic of some chlorinated hydrocarbons. The Odor Threshold is 25-50 ppm.
Melting point  -86 °C
mp  -86 °C
Boiling point  87 °C
bp  87 °C
density  1.463 g/mL at 25 °C(lit.)
vapor density  4.5 (vs air)
vapor pressure  61 mm Hg ( 20 °C)
refractive index  n20/D 1.476(lit.)
Fp  90°C
storage temp.  0-6°C
solubility  Soluble in acetone, ethanol, chloroform, ether (U.S. EPA, 1985), and other organic solvents including bromoform, carbon tetrachloride, methylene chloride, trichloroethylene, and tetrachloroethylene.
form  Liquid
color  Clear colorless
Stability: Stable. Incompatible with oxidizing agents, aluminium, magnesium, strong bases, reducing agents. Light-sensitive. Reacts violently with many metals, ozone, potassium nitrate, potassium hydroxide, sodium hydroxide.
Odor Chloroform-like; ethereal.
Odor Threshold 3.9ppm
Water Solubility  Slightly soluble. 0.11 g/100 mL
Merck  14,9639
BRN  1736782
Henry's Law Constant 3.14 at 1.8 °C, 8.47 at 21.6 °C, 19.0 at 40.0 °C, 26.5 at 50 °C, 35.8 at 60 °C, 56.6 at 70 °C (EPICS-GC, Shimotori and Arnold, 2003)
Exposure limits TLV-TWA 50 ppm (~270 mg/m3) (ACGIH), 100 ppm (MSHA and OSHA); TLV-STEL 200 ppm (ACGIH); ceiling 200 ppm (OSHA); carcinogenicity: Animal Lim ited Evidence, Human Inadequate Evidence (IARC).
Contact allergens

Trichloroethylene is a chlorinated hydrocarbon used as a detergent or solvent for metals, oils, resins, sulfur, and as general degreasing agent. It can cause irritant contact dermatitis, generalized exanthema, Stevens-Johnson- like syndrome, pustular or bullous eruption, scleroderma, as well as neurological and hepatic disorders.

CAS DataBase Reference 79-01-6(CAS DataBase Reference)
IARC 1 (Vol. Sup 7, 63, 106) 2014
NIST Chemistry Reference Trichloroethylene(79-01-6)
EPA Substance Registry System 79-01-6(EPA Substance)

Safety Data

Hazard Codes  T
Risk Statements 

R45:May cause cancer.
R36/38:Irritating to eyes and skin .
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R67:Vapors may cause drowsiness and dizziness.
R68:Possible risk of irreversible effects.
R39/23/24/25:Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed .
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed .

Safety Statements 

S53:Avoid exposure-obtain special instruction before use .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S36/37:Wear suitable protective clothing and gloves .

RIDADR  UN 1710 6.1/PG 3
WGK Germany  3
RTECS  KX4550000
HazardClass  6.1
PackingGroup  III
HS Code  29032200
Safety Profile

Confirmed carcinogen with experimental carcinogenic, tumorigenic, and teratogenic data. Experimental poison by intravenous and subcutaneous routes. Moderately toxic experimentally by ingestion and intraperitoneal routes. Mildly toxic to humans by ingestion and inhalation. Mildly toxic experimentally by inhalation. Human systemic effects by ingestion and inhalation: eye effects, somnolence, hallucinations or distorted perceptions, gastrointestinal changes, and jaundice. Experimental reproductive effects. Human mutation data reported. An eye and severe skin irritant. Inhalation of high concentrations causes narcosis and anesthesia. A form of addiction has been observed in exposed workers. Prolonged inhalation of moderate concentrations causes headache and drowsiness. Fatalities following severe, acute exposure have been attributed to ventricular fibrdlation resulting in cardiac failure. There is damage to liver and other organs from chronic exposure. A common air contaminant. Nonflammable, but high concentrations of trichloroethylene vapor in hightemperature air can be made to burn mildly if plied with a strong flame. Though such a condition is difficult to produce, flames or arcs should not be used in closed equipment that contains any solvent residue or vapor. Reacts with alkali, epoxides, e.g., l-chloro- 2,3-epoxypropane, 1,4-butanediol mono-2,3- epoxypropylether, 1,4-butanediol di-2,3- epoxypropylether, 2,2-bis [(4(2',3'- epoxypropoxy)phenyl)propane] to form the spontaneously flammable gas dichloroacetylene. Can react violently with Al, Ba, N2O4, Li, Mg, liquid O2, O3, KOH, KNO3, Na, NaOH, Ti. Reacts with water under heat and pressure to form HCl gas. When heated to decomposition it emits toxic fumes of Cl-. See also CHLORINATED HYDROCARBONS, ALIPHATIC.

Hazardous Substances Data 79-01-6(Hazardous Substances Data)

LD50 orally in rats: 4.92 ml/kg; LC (4 hrs) in rats: 8000 ppm (Smyth)

IDLA 1,000 ppm

Hazard Information

Material Safety Data Sheet(MSDS)