| Chemical |
Dibenz(a,h)anthracene |
| CAS-number : |
53-70-3 |
| |
| Synonyms : |
| 1,2:5,6-dibenzanthracene |
| |
| Sumformula of the chemical : |
| C22H14
C22H14 |
| EINECS-number : |
| 2001818 |
| |
| Log octanol/water coefficient, log Pow : |
| 6.75 |
Sangster 1989 |
| |
| Log soil sorption coefficient, log Kom : |
| 6.31 |
observed, Sabljic 1987 |
| 6.44 |
calculated, Sabljic 1987 |
| |
| Photochemical degradation in air : |
Atmospheric photolysis half-life:
6hr - 782 hr,
scienbtific judgement based upon measured rate of photolysis
in heptane under November sunlight (High t1/2) and the above
data adjusted by ratio of sunlight photolysis half-lives for
benz(a)anthracene in water vs. heptane (low t1/2)
(Howard 1991).
Photooxidation half-life in air:
0.428hr - 4.28hr,
scientific judgement based upon estimated rate constant for
reaction with hydroxyl radical in air (Howard 1991).
|
| |
| Photochemical degradation in water : |
Aquatic photolysis half-life:
6hr - 782hr,
scientific judgement based upon measured rate of photolysis in
heptane under November sunlight (high t1/2) and the above data
adjusted by ratio of sunlight photolysis half-lives for
benz(a)anthracene in water vs. heptane (low t1/2)
(Howard 1991).
|
| |
| Half-life in air, days : |
| 0.02 |
0.428hr - 4.28hr, |
| 0.18 |
scientific judgement based upon estimated |
| |
photooxidation half-life in air, |
| |
Howard 1991 |
| |
| Half-life in soil, days : |
| 361 |
361d - 2.58yr, based upon aerobic soil |
| 928.8 |
die-away test data, |
| |
Howard 1991 |
| |
| Half-life in water, days : |
| 0.25 |
6hr - 782hr, |
| 32.58 |
in surface water, scientific judgement based |
| |
upon sunlight photolysis half-life in water, |
| 712.8 |
1.98yr - 5.15yr, |
| 1854 |
in ground water, scientific judgement based |
| |
upon estimated unacclimated aqueous aerobic |
| |
biodegradation half-life, |
| |
Howard 1991 |
| |
| Aerobic degradation in water : |
Aerobic half-life:
361d - 2.58yr, based upon aerobic soil die-away test data
(Howard 1991).
|
| |
| Anaerobic degradation in water : |
Anaerobic half-life:
3.96yr - 10.3yr, scientific judgement based upon estimated
unacclimated aqueous aerobic biodegradation half-life
(Howard 1991).
|
| |
| Other information of water organisms : |
Lethal threshold concentration (LT50):
0.0004 mg/l, 0.13 d (Newsted & Giesy 1987).
|
References |
| 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.
|
| 1889 | Newsted, J.L. & Giesy, J.P. 1987.
Predictive models for
photoinduced acute toxicity of polycyclic aromatic hydrocarbons to
Daphnia magna, Strauss (Cladocera,Crustacea).
Environ.
Toxicol.
Chem. 6: 445. |
| 1973 | Pilli.A., Carle, D.O., Kline.
E., Pickering.
Q. & Lazorchak.
J. 1988.
Effets of pollution on freshwater organisms.
JWPCF
60(6): 994 - 1065. |
| 2324 | Sabljic, A. 1987.
On the prediction of soil sorption
coefficients of organic pollutants from molecular structure:
application of molecular topology model.
Environ.
Sci.
Technol.
21: 358 - 366. |
| 3104 | Sangster, J. 1989.
Octanol-water partition coefficients of
simple organic compounds.
J.
Phys.
Chem.
Ref.
Data, Vol 18, No.
3: 1111 - 1229. |
