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Data bank of environmental chemicals     |     The Finnish Environment Institute (SYKE)
 


28.3.2024

Data bank of environmental properties of chemicals


Chemical
1,1-Dichloroethane
CAS-number :
75-34-3
 
Synonyms :
1,1-dikloorietaani
ethylidene chloride
ethylidene dichloride
 
Sumformula of the chemical :
C2H4Cl2
EINECS-number :
2008635
 
Uses :
Intermediate.
 
Molecular weight :
98.96
 
Water solubility, mg/l :
5500 
 
Melting point, °C :
-97 
 
Boiling point, °C :
57.3 
 
Log octanol/water coefficient, log Pow :
1.99  Anon 1988
 
Henry's law constant, Pa x m3/mol :
560  Anon 1988
578.6  calc. Yaws et al. 1991
 
Volatilization :
Relative volatility (nBuAc=1) = 11.60
 
Mobility :
Equilibrium distribution:
        mass %
air     99.48
water    0.52
solid    0.00
(Anon 1988)
 
Photochemical degradation in air :
Photooxidation half-life in air:
10.3d - 103d,
based upon measured rate data for the vapor phase reaction with 
hydroxyl radicals in air (Howard 1991).
 
Half-life in air, days :
10.3  10.3d - 103d,
103  based upon photooxidation half-life in air,
  Howard 1991
 
Half-life in soil, days :
32  32d - 22w,
154  scientific judgement based upon methane acclimated
  soil grab sample data (low t1/2) and sub-soil grab
  sample data from a ground water aquifer,
  Howard 1991
 
Half-life in water, days :
32  32d- 22w,
154  in surface water, scientific judgement based upon
  estimated aqueous aerobic biodegradation half-life,
64  64d - 22w,
154  in ground water, scientific judgement based upon
  estimated aqueous aerobic biodegradation half-life
  and sub-soil grab sample data from a ground water
  aquifer,
  Howard 1991
 
Aerobic degradation in water :
Aerobic half-life:
32d - 22w,
scientific judgement based upon estimated methane acclimated 
soil grab sample data (low t1/2) and sub-soil grab sample data 
from a ground water aquifer (high t1/2) (Howard 1991).
 
Anaerobic degradation in water :
Anaerobic half-life:
128d - 88w,
scientific judgement based upon estimated aqueous aerobic 
biodegradation half-life (Howard 1991).
 
LD50 values to mammals in oral exposure, mg/kg :
725  orl-rat, Lewis & Sweet 1984
 
TDLo values to mammals in oral exposure, mg/kg :
185  orl-mus, Lewis & Sweet 1984
 
TCLo values to mammals in inhalation exposure, ppm :
6000  ihl-rat, 6 - 15 d preg.
  Lewis & Sweet 1984
 
Maximum longterm immission concentration in air for plants,mg/m3 :
VDI 2306
 
Maximum longterm immission concentration in air for plants,ppm :
VDI 2306
 
LC50 values to fishes, mg/l :
550  srv,act, 96 hr, Lepomis macrochirus,
480  srv,act,96 hr, Menidia audens, Dawson et
  al. 1977
  --
200  srv,act, 7 d, Poelicia reticulata,
  Könemann 1979

References
2357Anon 1988. Concentrations of industrial organic chemicals measured in the environment: The influence of physico - chemical properties, tonnage and use pattern. Technical report no 29. European chemical industry ecology & toxicology centre, ECETOC. pp. 105.
327Dawson, G.W., Jennings, A.L., Drozdowski, D. & Rider, E. 1977a. The acute toxicity of 47 industrial chemicals to fresh and saltwater fishes. J. Hazardous Materials 1 (1975/77): 303 - 318.
3120Howard, P.H., Boethling, R.S., Jarvis, W.F., Meylan, W.M. & Michalenko, E.M., Handbook of Environmental Degradation Rates, 1991. Lewis Publicers, Inc., Chelsea, Michigan, U.S.A., pp. 725.
761Könemann, W.H. 1979. Quantitative structure-activity relationships for kinetics and toxicity of aquatic pollutants and their mixtures in fish. Univ. Utrecht, Netherlands.
1589Lewis, R.J. & Sweet, D.V. 1984. Registry of toxic effects of chemical substances. National Institute for Occupational Safety and Health. No. 83-107-4.
1599VDI 2306. VDI-Kommission Reinhaltung der Luft. Maximale Immissions-Konzentrationen (MIK). Organische Verbildungen.
3030Yaws, C., Yang, H-C. & Pan, X. 1991. Henry's law constants for 362 organic compounds in water. Chemical Engineering. November. p 179 - 185.

 
 
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