| Chemical |
1,2,4-trimethylbenzene |
| CAS-number : |
95-63-6 |
| |
| Sumformula of the chemical : |
| C9H12 |
| EINECS-number : |
| 2024369 |
| |
| Water solubility, mg/l : |
| 10 |
< 10, MITI 1992 |
| |
| Boiling point, °C : |
| 169 |
169-171, MITI 1992 |
| |
| Log octanol/water coefficient, log Pow : |
| 3.63 |
Sangster 1989 |
| |
| Henry's law constant, Pa x m3/mol : |
| 570.8 |
calc. Yaws et al. 1991 |
| |
| Photochemical degradation in air : |
Photooxidation half-life in air:
16hr - 1.6hr, based upon measured vapor-phase photooxidation
rate constant with OH (Howard 1991).
|
| |
| Photochemical degradation in water : |
Photooxidation half-life in water:
4.9yr - 44d, based upon measured aqueous photooxidation rate
constant with hydroxyl radicals (Howard 1991).
|
| |
| Half-life in air, days : |
| 0.67 |
16hr - 1.6hr, |
| 0.07 |
based upon measured photooxidation rate constant with OH. |
| |
Howard 1991 |
| |
| Half-life in soil, days : |
| 28 |
4w - 7d, |
| 7 |
scientific judgement based upon estimated aqueous aerobic biodegradation half-lives. |
| |
Howard 1991 |
| |
| Half-life in water, days : |
| 28 |
28d - 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-lives. |
| |
Howard 1991 |
| |
| Aerobic degradation in water : |
Aerobic half-life:
4w - 7d, intermediate degradation rate selected based upon
scientific judgement of conflicting aqueous screening studies
Howard 1991).
|
| |
| Anaerobic degradation in water : |
Anaerobic half-life:
16w - 28d, scientific judgement based upon estimated aqueous
aerobic biodegradation half-lives (Howard 1991).
|
| |
| Total degradation in water : |
Biodegradation:
4-18% by BOD
period: 28d
substance: 100 mg/l
sludge: 30 mg/l
(MITI 1992)
|
| |
| Ready biodegradability : |
Confirmed to be non-biodegradable (Anon. 1987). |
| |
| Bioconcentration factor, fishes : |
| 33 |
33 - 275, 8w, Cyprinus carpio, conc 0.2 mg/l, |
| 275 |
|
| 31 |
31 - 207, 8w, Cyprinus carpio, conc 0.02 mg/l, |
| 207 |
MITI 1992 |
| |
| Other information of bioaccumulation : |
Confirmed to be non-accumulative or low accumulative (Anon.
1987).
|
| |
| LC50 values to fishes, mg/l : |
| 18 |
48hr, Oryzias latipes, MITI 1992 |
| |
-- |
| 7.72 |
96 hr, Pimephales promelas, Geiger et al. 1986 |
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. |
| 3294 | Geiger, D.
L. et al. 1986.
Acute toxicities of organic
chemicals to fathead minnows (Pimephales promelas) Vol. 3.
Center for Lake Superior Environmental Studies, University of
Wisconsin-Superior, Superior, Wisconsin, U.S.A., 328.
|
| 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.
|
| 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.
|
| 3104 | Sangster, J. 1989.
Octanol-water partition coefficients of
simple organic compounds.
J.
Phys.
Chem.
Ref.
Data, Vol 18, No.
3: 1111 - 1229. |
| 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. |
