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Chemical Properties

CAS Registry Number: 79-34-5

Selected information from two of the National Library of Medicine's databases: ChemIDPlus2 and HSDB3.

Names 1

  • 1,1,2,2-Tetrachloroethane
  • Acetylene Tetrachloride
  • Acetylenetetrachloride
  • Tce

Structure

Chemical Structure for Chemical Abstracts Service Registry Number 79-34-5 from NLM

Synonyms (Sources: NTP,HSDB,RTECS,MESH)2

  • 1,1,2,2-Czterochloroetan [Polish]
  • 1,1,2,2-Tetrachloorethaan [Dutch]
  • 1,1,2,2-Tetrachloraethan [German]
  • 1,1,2,2-Tetrachlorethane [French]
  • 1,1,2,2-Tetrachloroethane
  • 1,1,2,2-Tetracloroetano [Italian]
  • 1,1-Dichloro-2,2-dichloroethane
  • 4-01-00-00144 (Beilstein Handbook Reference)
  • AI3-04597
  • Acetosal
  • Acetylene tetrachloride
  • BRN 0969206
  • Bonoform
  • Cellon
  • Dichloro-2,2-dichloroethane
  • Ethane, 1,1,2,2-tetrachloro-
  • HSDB 123
  • NCI-C03554
  • RCRA waste number U209
  • Tetrachlorethane
  • Tetrachloroethane
  • Tetrachlorure d'acetylene [French]
  • Westron
  • s-Tetrachloroethane

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Other Registry Numbers2

  • None Found

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Chemical Properties3

Property Description
Boiling Point
  • 146.0 deg C
Color/Form
  • Clear liquid
  • Colorless liquid
  • Colorless to pale-yellow liquid
  • Heavy, mobile liquid
Corrosivity
  • Corrosive liquid
  • Liquid will attack some forms of plastics, rubber and coatings.
Critical Temperature & Pressure
  • Critical temperature = 388 deg C; Critical pressure = 4000 kPa
Density/Specific Gravity
  • 1.5953 g/cu cm at 20 deg C
Dissociation Constants
  • None Found
Heat Of Combustion
  • -8.3464X10+08 J/kmol
Heat Of Vaporization
  • 45.71 kJ/mol at 25 deg C
Melting Point
  • -42.3 deg C
Molecular Weight
  • 167.849
Odor
  • Pungent, chloroform-like odor
  • Sweetish odor
  • Sweetish suffocating chloroform-like odor
Other Chemical/Physical Properties
  • 0.79% in saturated air at 25 deg C
  • Average evaporative half-life of 55.2 min for concn of 0.92 mg/L in water.
  • Bulk density 13.25 lb/gal at 25 deg C
  • Conversion factors: 1 mg/L 145.8 ppm, and 1 ppm 6.86 mg/cu m at 25 deg C, 760 torr
  • Heat of Vaporization: 37.64 kJ/mol at 145.2 deg C
  • Henry's Law constant = 4.20X10-4 atm-cu m/mole at 25 deg C
  • Hydroxyl radical reaction rate constant = 1.26X010-13 cu cm/molec-sec at 25 deg C
  • Liquid molar volume = 0.105754 cu m/kmol; Heat of fusion at melting point = 9.172X10+06 J/kmol
  • Partition coefficients at 37 deg C for 1,1,2,2-tetrachloroethane into blood = 121; into oil = 13,200
  • Ratio of specific heats of vapor (gas): 1.090 at 25 deg C; latent heat of vaporization: 55.1 cal/g
  • Sat concn in air = 46 g/cu m at 20 deg C, 75 g/cu m at 30 deg C
  • Solubility of water in solvent at 20 deg C = 0.03% by weight; Water- no cloud at -10 deg C = 0.032% by weight; freezing point -43 deg C; Residues on evaporation 0.00062% by weight
  • VP = 9 mm Hg at 30 deg C
Relative Evaporation Rate
  • 0.65 (Butyl acetate = 1)
Solubilities
  • In water, 2,830 mg/L at 25 deg C
  • In water, 2,900 mg/L at 20 deg C.
  • Miscible with methanol, benzene, petroleum ether, carbon tetrachloride, chloroform, carbon disulfide, dimethylformamide and oils
  • One gram dissolves in 350 mL of water at 25 deg C
  • Soluble in acetone; miscible in ether and ethanol
Spectral Properties
  • 1H NMR: 10209 (Sadtler Research Laboratories Spectral Collection)
  • IR: 60 (Sadtler Research Laboratories IR Grating Spectral Collection)
  • Index of refraction: 1.49410 at 20 deg C/D
  • MASS: 34547 (NIST/EPA/MSDC Mass Spectral Database 1990 Version); 1422 (Atlas of Mass Spectral Data John Wiley and Sons, New York)
  • Raman: 754 (Sadtler Research Laboratories Spectral Collection)
  • SADTLER REFERENCE NUMBER: 1465 (IR, PRISM); 247 (IR, GRATING)
Surface Tension
  • 34.72 dynes/cm at 20 deg C
Taste
  • None Found
Vapor Density
  • 5.79 (Air = 1)
Vapor Pressure
  • 5.74 mm Hg at 25 deg C
Viscosity
  • 0.00177 Pa.s at 20 deg C
log P (octanol-water)
  • log Kow = 2.39
pH
  • None Found

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Uses3

  • ... Cleansing and degreasing metals; ... paint removers, ... lacquers, photographic film; ...alcohol denaturant ... . **PEER REVIEWED**
  • 1,1,2,2-Tetrachloroethane is almost always used as an intermediate in the production of trichloroethylene. Although it has a high solvency (e.g., as solvent for the production of chlorinated polystyrene), it is very rarely used as a solvent because of its high toxicity. **PEER REVIEWED**
  • Bleach manufacturing **PEER REVIEWED**
  • Chemical intermediate for trichloroethylene and tetrachloroethylene; chemical intermediate for 1,2- and 1,1-dichloroethylene; solvent eg, for polyesters and extractions; moth-proofing agent for textiles. **PEER REVIEWED**
  • For 1,1,2,2-tetrachloroethane (USEPA/OPP Pesticide Code: 078601) there are 0 labels match. /SRP: Not registered for current use in the U.S., but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses./ **PEER REVIEWED**
  • Inert pesticide ingredient, Approved for Nonfood Use Only **PEER REVIEWED**
  • Nonflammable solvent for fats, oils, waxes, resins, cellulose acetate, rubber, copal, phosphorus, sulfur. As solvent in certain types of Friedel-Crafts reactions or phthalic anhydride condensations. In the manufacture of paint, varnish, and rust removers. In soil sterilization and weed killer and insecticide formulations. In the determination of theobromine in cacao. As immersion fluid in crystallography. In the biological laboratory to produce pathological changes in gastrointestinal tract, liver and kidneys. Intermediate in the manufacture of trichloroethylene and other chlorinated hydrocarbons having two carbon atoms. **PEER REVIEWED**
  • The only significant use of 1,1,2,2-tetrachloroethane is as a feedstock in the manufacture of trichloroethylene, tetrachloroethylene and 1,2-dichloroethylene. **PEER REVIEWED**
  • Used in cement, lacquers; in manufacture of artificial silk, and artificial pearls. Recently, it has also been used in the estimation of water content in tobacco and many drugs, and as a solvent for chromium chloride impregnation of furs. **PEER REVIEWED**

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Notes (Sources: NTP,HSDB,RTECS,MESH)2

  • See also record for tetrachloroethane.

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Superlist Classes2

  • 2007 CERCLA Priority List, Rank: 146
  • 2011 CERCLA Priority List, Rank: 147
  • Overall Carcinogenic Evaluation: Group 3
  • Reportable Quantity (RQ) = 100 lb
  • TWA (1 ppm); skin; Confirmed animal carcinogen with unknown relevance to humans
  • TWA 5 ppm (35 mg/m3); skin

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Links to Additional Information2

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Footnotes

1 Source: the NTP's CEBS database.

2 Source: the National Library of Medicine's ChemIDPlus, 02/28/2017.

3 Source: the National Library of Medicine's Hazardous Substance Database, 02/28/2017.

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