1,1,2,2-Tetrachloroethane

CAS RN:79-34-5

Other Properties

VP = 9 mm Hg at 30 deg C

Average evaporative half-life of 55.2 min for concn of 0.92 mg/L in water.

Ratio of specific heats of vapor (gas): 1.090 at 25 deg C; latent heat of vaporization: 55.1 cal/g

Bulk density 13.25 lb/gal at 25 deg C

Sat concn in air = 46 g/cu m at 20 deg C, 75 g/cu m at 30 deg C

0.79% in saturated air at 25 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

Partition coefficients at 37 deg C for 1,1,2,2-tetrachloroethane into blood = 121; into oil = 13,200

Liquid molar volume = 0.105754 cu m/kmol; Heat of fusion at melting point = 9.172X10+06 J/kmol

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

Find more information on this substance at: Hazardous Substances Data Bank , TOXMAP , TOXNET , PubMed