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 : |
8 |
VDI 2306 |
|
Maximum longterm immission concentration in air for plants,ppm : |
2 |
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 |
2357 | Anon 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. |
327 | Dawson, 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. |
3120 | Howard, 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.
|
761 | Könemann, W.H. 1979.
Quantitative structure-activity
relationships for kinetics and toxicity of aquatic pollutants and
their mixtures in fish.
Univ.
Utrecht, Netherlands. |
1589 | Lewis, R.J. & Sweet, D.V. 1984.
Registry of toxic effects of
chemical substances.
National Institute for Occupational Safety
and Health.
No. 83-107-4. |
1599 | VDI 2306.
VDI-Kommission Reinhaltung der Luft.
Maximale
Immissions-Konzentrationen (MIK).
Organische Verbildungen. |
3030 | Yaws, C., Yang, H-C. & Pan, X. 1991.
Henry's law constants for
362 organic compounds in water.
Chemical Engineering.
November.
p 179 - 185. |