Trichloroethylene

  • Trichloroethene
  • Ethylene trichloride
  • 1,1,2-Trichloroethene
  • Acetylene trichloride
  • Ethinyl trichloride
Formula
Cl2C=CHCl
Structure
Description
Clear, colorless liquid with an ethereal, sweet, chloroform-like odor.
Uses
Therap cat: anesthetic (inhalation)former use, therap cat (vet): anesthetic (inhalation).

Registry Numbers and Inventories.
CAS
79-01-6
EC (EINECS/ELINCS)
201-167-4
EC Index Number
602-027-00-9
EC Class
Carcinogenic Category 2; Mutagenic Category 3; Vapours may cause drowsiness and dizziness; Irritant; Dangerous for the Environment
R 45 36/38 52/53 67 68
S 53 45 61
RTECS
KX4550000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Drug; Mutagen; Reproductive Effector; Human Data; Primary Irritant
UN (DOT)
1710
Merck
12,9769
Beilstein/Gmelin
1736782
Beilstein Reference
4-01-00-00712
RCRA
U228
EPA OPP
81202
Swiss Giftliste 1
G-2081
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C2HCl3
Formula mass
131.79
Melting point, °C
-73
Boiling point, °C
86.7
Vapor pressure, mmHg
58 (20 C)
Vapor density (air=1)
4.53
Saturation Concentration
7.9% (20 C)
Evaporization number
4.9 (n-butyl acetate = 1)
Odor Threshold Odor threshold 21.4 ppm in water
Critical temperature
271
Critical pressure
49.50
Density
1.46 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
0.49 cp (40 C)
Surface tension
29.1 g/s2 (20 C)
Refractive index
1.47914 (20 C)
Dipole moment
0.8 D (20 C)
Dielectric constant
3.42 (16 C)
Partition coefficient, pKow
2.61
Heat of vaporization
34.51 kJ/mol
Heat of combustion
-865 kJ/mol

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
D1B D2A D2B
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Ground and bond containers when transferring material. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Wear a supplied air, full-facepiece respirator, airlined hood, or full-facepiece self-contained breathing apparatus. Breathing air quality must meet the requirements of the OSHA respiratory protection standard (29CFR1910.134). This substance has poor warning properties. Where respirators are required, you must have a written program covering the basic requirements in the OSHA respirator standard. These include training, fit testing, medical approval, cleaning, maintenance, cartridge change schedules, etc. See 29CFR1910.134 for details.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Remove all sources of ignition. Provide ventilation.
Stability
Stable under ordinary conditions of use and storage. Will slowly decompose to hydrochloric acid when exposed to light and moisture.
Incompatibilities
Strong caustics and alkalis, strong oxidizers, chemically active metals, such as barium, lithium, sodium, magnesium, titanium and beryllium, liquid oxygen.
Decomposition
Carbon monoxide, carbon dioxide, hydrogen chloride and phosgene.

Fire.
Flash Point,°C
32
Autoignition, °C
410
Upper exp. limit, %
12.5
Lower exp. limit, %
7.9
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use water spray to cool fire-exposed containers. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
Slightly flammable. Except at elevated temperatures.
Hazards
Air/vapor mixtures may explode when ignited. Container may explode in heat of fire.
Combustion products
Combustion by-products include phosgene and hydrogen chloride gases. Structural firefighters' clothing provides only limited protection to the combustion products of this material.
Health
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure limit(s)
OSHA PEL: TWA 100 ppm C 200 ppm 300 ppm (5-minute maximum peak in any 2 hours) NIOSH REL: Ca See Appendix A See Appendix C NIOSH IDLH: Potential occupational carcinogen 1000 ppm
Carcinogin
I-2A, N-2, CP65
Poison_Class
4
Exposure effects
Chronic exposures may cause liver, kidney, central nervous system, and peripheral nervous system effects. Workers chronically exposed may exhibit central nervous system depression, intolerance to alcohol, and increased cardiac output. This material is linked to mutagenic effects in humans. This material is also a suspect carcinogen.
   Ingestion
Cases irritation to gastrointestinal tract. May also cause effects similar to inhalation. May cause coughing, abdominal pain, diarrhea, dizziness, pulmonary edema, unconsciousness. Kidney failure can result in severe cases. Estimated fatal dose is 3-5 ml/kg.
   Inhalation
Vapors can irritate the respiratory tract. Causes depression of the central nervous system with symptoms of visual disturbances and mental confusion, incoordination, headache, nausea, euphoria, and dizziness. Inhalation of high concentrations could cause unconsciousness, heart effects, liver effects, kidney effects, and death.
   Skin
Cause irritation, redness and pain. Can cause blistering. Continued skin contact has a defatting action and can produce rough, dry, red skin resulting in secondary infection.
   Eyes
Vapors may cause severe irritation with redness and pain. Splashes may cause eye damage.

First aid
 
   Ingestion
Induce vomiting immediately as directed by medical personnel. Never give anything by mouth to an unconscious person. Call a physician.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration.
   Skin
Get medical aid if irritation develops or persists. Flush skin with plenty of soap and water.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1710
Response guide
Hazard class
6.1
Packing Group
III
 
USCG CHRIS Code
TCL
 
36 Halogenated hydrocarbons
HS Code
2903 22 00
 
Std. Transport #
4925181
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
S/P