| Chemical |
Ethylenethiourea |
| CAS-number : |
96-45-7 |
| |
| Synonyms : |
| 1,3-ethylenethiourea |
| 2-mercapto imidazoline |
| ETU |
| etyleenitiourea |
| |
| Sumformula of the chemical : |
| C3H6N2S |
| EINECS-number : |
| 2025069 |
| |
| Uses : |
Electrplating baths; intermediate for antioxidants,
insecticides; fungicides; vullanization accelerators; dyes;
pharmaceuticals; as an accelerator in the rubber industry
|
| |
| State and appearance : |
Solid.
|
| |
| Molecular weight : |
102.2 |
| |
| Vapor pressure, mmHg : |
| 0.0000006 |
CESARS 1994 |
| |
| Water solubility, mg/l : |
| 10000 |
>10000, MITI 1992 |
| 147000 |
ASTER 1994 |
| |
| Melting point, °C : |
| 198 |
MITI 1992 |
| |
| Log octanol/water coefficient, log Pow : |
| -0.66 |
LOGKOW 1994 |
| -0.87 |
ASTER 1994 |
| |
| Log soil organic carbon coefficient, log Koc : |
| 0.863 |
ASTER 1994 |
| |
| Photochemical degradation in air : |
Photooxidation half-life in air:
4.7hr - 0.5hr, scientific judgement based upon an estimated
rate constant for vapor phase reaction with hydroxyl radicals
in air (Howard 1991).
|
| |
| Half-life in air, days : |
| 0.2 |
4.7hr - 0.5hr, |
| 0.02 |
scientific judgement based upon estimated photooxidation halflife in air. |
| |
Howard 1991 |
| |
| Half-life in soil, days : |
| 28 |
4w - 7d, |
| 7 |
scientific judgement based upon tield test data in soilll. |
| |
Howard 1991 |
| |
| Half-life in water, days : |
| 28 |
4w - 7d, |
| 7 |
in surface water: scientific judgement based upon estimated aqueous aerobic biodegradation half-life, |
| 56 |
8w - 14d, |
| 14 |
in ground water: scientific judgement based upon estimated aqueous aerobic biodegradation half-life. |
| |
Howard 1991 |
| |
| Aerobic degradation in water : |
Aerobic half-life:
4w - 7d, scientific judgement based upon field test data in
soil (Howard 1991).
|
| |
| Anaerobic degradation in water : |
Anaerobic half-life:
16w - 28d, scientific judgement based upon estimated aqueous
aerobic biodegradation half-life (Howard 1991).
|
| |
| Total degradation in water : |
Biodegradation:
0% by BOD
period: 14d
substance: 100 mg/l
sludge: 30 mg/l
(MITI 1992)
|
| |
| Bioconcentration factor, fishes : |
| 0.2 |
< 0.2 - 0.3, 6w, Cyprinus carpio, conc 1 mg/l, |
| 0.3 |
|
| 1.8 |
< 1.8, 6w, Cyprinus carpio, conc 0.1 mg/l, |
| |
| LD50 values to mammals in oral exposure, mg/kg : |
| 265 |
CESARS 1994 |
| |
| EC50 values to microorganism, mg/l : |
| 2447 |
15 min Microtox, Govers et al. 1986 |
| |
| LC50 values to algae, mg/l : |
| 28000 |
QSARTOX 1994 |
| |
| EC50 values to algae, mg/l : |
| 6600 |
rpd,act, 96 hr, Chlorella pyrenoidosa, |
| |
Leeuwen et al. 1985 |
| |
-- |
| 6600 |
96hr, Chrorella pyrenoidosa, AQUIRE 1994 |
| |
| LC50 values to crustaceans, mg/l : |
| 26 |
srv,act, 48 hr, Daphnia magna, |
| |
Leeuwen et al. 1985 |
| |
-- |
| 26.4 |
48hr, Daphnia magna, AQUIRE 1994 |
| |
-- |
| 28000 |
Daphnia, QSARTOX 1994 |
| |
| NOEC values to crustaceans, mg/l : |
| 18 |
21d, Daphnia magna, AQUIRE 1994 |
| |
| LC50 values to fishes, mg/l : |
| 7500 |
srv,act, 96 hr, Poelicia reticulata, |
| |
Leeuwen et al. 1979 |
| |
-- |
| 1000 |
>1000, 48hr, Oryzias latipes, MITI 1992 |
| |
-- |
| 7500 |
96hr, Poecilia reticulata, AQUIRE 1994 |
| |
-- |
| 24000 |
QSARTOX 1994 |
References |
| 3107 | AQUIRE 1993 -.
Aquatic Toxity Information Retrieval Database.
U.S.Environmental Protection Agency, Office of Pesticides and
Toxic Substances, Washington, D.C.
|
| 3109 | ASTER 1993 -.
Assessment Tool for the Evaluation of Risk
(including the AQUIRE database).
USEPA, Environmental Research
Laboratory.
|
| 3185 | CESARS. 1993 -.
Chemical Evaluation Search and Retrieval System.
Michigan Department of Natural Resources and Ontario Ministry of
the Environment.
|
| 2428 | Govers, H. et al. 1986.
Experimental determination and
prediction of partition coefficients of thioureas and their
toxicity to Photobacterium phosphoreum.
Chemosphere 15: 383. |
| 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.
|
| 810 | Leeuwen, C.J. van, Maas-Diepeveen; J.L., Niebeek, G.,
Vergoun, W.H.A., Griffioen, P.S. & Luijiken, M.W. 1985.
Aquatic toxicological aspects of dithiocarbamates and
related compounds.
I.
Short-term toxicity tests.
Aquatic
Toxicol. 7(3): 145-164. |
| 811 | Leeuwen, C.J. van, Moberts, F. & Niebeck, Y. 1985b.
Aquatic
toxicological aspects of dithiocarbamates and related
compounds.
II.
Effects on survival, reproduction and growth of
Daphnia magna.
Aquatic Toxicol. 7(3): 165 - 175. |
| 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.
|
| 3255 | QSARTOX 1994 -.
QSARTOX-programme.
Version 1.0.
J.R.
Niemelä.
Danish Environmental Protection Agency.
|
| 2413 | Walker, J.
D. 1987.
Effects of chemicals on microorganisms.
Journal WPCF 59 (6): 614 - 625. |
