| Chemical |
3,3'-dimethylbenzidine |
| CAS-number : |
119-93-7 |
| |
| Synonyms : |
| [1,1'-Biphenyl]-4,4'-diamine, 3,3'-dimethyl- |
| Bianisidine |
| |
| Sumformula of the chemical : |
| C14H16N2
|
| EINECS-number : |
| 2043580 |
| |
| Molecular weight : |
212.32 |
| |
| Water solubility, mg/l : |
| 50 |
MITI 1992 |
| |
| Melting point, °C : |
| 129 |
MITI 1992 |
| |
| Log octanol/water coefficient, log Pow : |
| 2.39 |
MITI 1992 |
| |
| Photochemical degradation in air : |
Photooxidation half-life in air:
2.67hr - 0.267hr, scientific judgement based upon estimated
rate constant for reaction with hydroxyl radical in air (Howard
1991).
|
| |
| Photochemical degradation in water : |
Photooxidation half-life in water:
72.5d - 1.3d, scientific judgement based upon estimated rate
constants for reactions of representative aromatic amines with
HO and RO2.
It is assumed that 3,3` -dimethylbenzidine reacts
twice as fast as aniline (Howard 1991).
|
| |
| Half-life in air, days : |
| 0.11 |
2.67hr - 0.267hr, |
| 0.01 |
scientific judgement based upon estimated photooxidation half-life in air. |
| |
Howard 1991 |
| |
| Half-life in soil, days : |
| 7 |
1w - 1d, |
| 1 |
scientific judgement based upon estimated unacclimated aqueous aerobic biodegradation half-life. |
| |
Howard 1991 |
| |
| Half-life in water, days : |
| 7 |
1w - 1d, |
| 1 |
in surface water: scientific judgement based upon estimated unacclimated aqueous aerobic biodegradation half-life. |
| 14 |
2w - 2d, |
| 2 |
in ground water: scientific judgement based upon estimated unacclimated aqueous aerobic biodegradation half-life. |
| |
Hovard 1991 |
| |
| Aerobic degradation in water : |
Aerobic half-life:
7d - 1d, scientific judgement based upon unacclimated aqueous
aerobic biodegradation screening test data (Howard 1991).
|
| |
| Anaerobic degradation in water : |
Anaerobic half-life:
28d - 4d, scientific judgement based upon estimated
unacclimated aqueous aerobic biodegradation half-life (Howard
1991).
|
| |
| Total degradation in water : |
Biodegradation:
3% by BOD
substance: 100 mg/l
sludge: 30 mg/l
(MITI 1992)
|
| |
| Bioconcentration factor, fishes : |
| 4.8 |
4.8 - 34, 8w, Cyprinus carpio, conc 0.2 mg/l, |
| 34 |
|
| 10 |
10 - 83, 8w, Cyprinus carpio, conc 0.02 mg/l, |
| 83 |
MITI 1992 |
| |
| Other information of bioaccumulation : |
Confirmed to be non-accumulative or low accumulative (Anon.
1987).
|
| |
| LD50 values to mammals in oral exposure, mg/kg : |
| 404 |
orl-rat, Lewis & Sweet 1984 |
| |
| LDLo values to mammals in oral exposure, mg/kg : |
| 600 |
orl-dog, Lewis & Sweet 1984 |
| |
| LDLo values to mammals in non-oral exposure , mg/kg : |
| 125 |
ipr-rat, Lewis & Sweet 1984 |
| 125 |
ipr-mus, Lewis & Sweet 1984 |
| |
| TDLo values to mammals in oral exposure, mg/kg : |
| 4500 |
orl-rat, Lewis & Sweet 1984 |
| |
| TDLo values to mammals in non-oral exposure , mg/kg : |
| 3240 |
scu-rat, Lewis & Sweet 1984 |
| 5040 |
imp-rat, Lewis & Sweet 1984 |
| |
| Carcinogenicity : |
Carcinogenic determination: animal positive (Lewis & Sweet
1984).
|
| |
| LC50 values to fishes, mg/l : |
| 56 |
48hr, Oryzias latipes, MITI 1992 |
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. |
| 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.
|
| 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. |
| 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.
|
| 1468 | Verschueren, K. 1983.
Handbook of environmental data of
organic chemicals.
Van Nostrand Reinhold Co.
Inc., New York.
1310 s. |
