| Chemical |
Chloroacetic acid |
| CAS-number : |
79-11-8 |
| |
| Synonyms : |
| monochloroacetic acid |
| |
| Sumformula of the chemical : |
| C2H3ClO2 |
| EINECS-number : |
| 2011784 |
| |
| Molecular weight : |
94.5 |
| |
| Melting point, °C : |
| 62 |
MITI 1992 |
| |
| Boiling point, °C : |
| 189 |
MITI 1992 |
| |
| pKa : |
| 2.86 |
|
| |
| Log octanol/water coefficient, log Pow : |
| 0.34 |
LOGKOW 1994 |
| |
| Photochemical degradation in air : |
Photooxidation half-life:
9.6d - 96d,
based upon estimated reaction rate constant with -OH
(Howard 1991).
Atmospheric photolysis half-life:
79d - 790d,
based upon estimated aqueous photolysis half-lives
(Howard 1991).
|
| |
| Photochemical degradation in water : |
Aquatic photolysis half-life:
79d - 790d, low value based upon experimental photolysis data
utilizing an artificial light source; high value assumes a
diminished light intensity (Howard 1991).
|
| |
| Hydrolysis in water : |
First-order hydrolysis half-life:
960d, approximated half-life based upon losses in dark control
tests during photolysis experiments (Howard 1991).
|
| |
| Half-life in air, days : |
| 8.6 |
8.6d - 85.5d, |
| 85.5 |
based upon combined, estimated rates for |
| |
photooxidation and photolysis in air, |
| |
Howard 1991 |
| |
| Half-life in soil, days : |
| 1 |
1d - 7d, |
| 7 |
scientific judgement based upon estimated |
| |
aqueous aerobic biodegradation half-life, |
| |
Howard 1991 |
| |
| Half-life in water, days : |
| 1 |
1d - 7d, |
| 7 |
in surface water, scientific judgement based upon |
| |
estimated aqueous aerobic biodegradation half-life, |
| 2 |
2d - 14d, |
| 14 |
in ground water, scientific judgement based upon |
| |
estimated aqueous aerobic biodegradation half-life, |
| |
Howard 1991 |
| |
| Aerobic degradation in water : |
Aerobic half-life:
1d - 7d, scientific judgement based upon river die-away tests
using radio-labeled material (Howard 1991).
|
| |
| Anaerobic degradation in water : |
Anaerobic half-life:
4d - 28d, scientific judgement based upon estimated aqueous
aerobic biodegradation half-life (Howard 1991).
|
| |
| Total degradation in water : |
Biodegradation:
65% by BOD
period: 21d
substance: 100 mg/l
sludge: 30 mg/l
(MITI 1992)
|
| |
| Ready biodegradability : |
Confirmed to be biodegradable (Anon. 1987). |
| |
| EC50 values to algae, mg/l : |
| 0.028 |
48hr, bms, Scenedesmus subspicatus, AQUIRE 1994 |
| |
-- |
| 0.07 |
48hr, grw, Scenedesmus subspicatus, AQUIRE 1994 |
| |
| EC50 values to crustaceans, mg/l : |
| 77 |
48hr, Daphnia magna, AQUIRE 1994 |
| |
| NOEC values to crustaceans, mg/l : |
| 32 |
21 d, Daphnia magna, AQUIRE 1994 |
References |
| 1848 | Anon. 1987a.
The list of the existing chemical substances tested
on biodegradability by microorganisms or bioaccumulation in
fish body by Chemicals Inspection & Testing Institute.
Ministry
of International Trade and Industry, MITI.
Japan. |
| 3107 | AQUIRE 1993 -.
Aquatic Toxity Information Retrieval Database.
U.S.Environmental Protection Agency, Office of Pesticides and
Toxic Substances, Washington, D.C.
|
| 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.
|
| 3182 | LOG KOW 1994.
Octanol-water partition coefficient program.
Syracure Research Corporation.
Chemical Hazard Assessment
Division.
Environmental Chemistry Center.
|
| 3105 | MITI 1992.
Biodegradation and bioaccumulation data of existing
chemicals based on the CSCL Japan.
Compild under the Safety
Division Basic Industries Bureau Ministry of International
Trade & Industry, Japan.
Edited by Chemicals Inspection &
Testing Institute, Japan.
|
