Chemical |
2,4,6-Triamino-1,3,5-triazine |
CAS-number : |
108-78-1 |
|
Synonyms : |
1,3,5-Triazine-2,4,6-triamine |
Melamine |
|
Sumformula of the chemical : |
C3H6N6 |
EINECS-number : |
2036154 |
|
Water solubility, mg/l : |
4000 |
MITI 1992 |
|
Photochemical degradation in air : |
Photooxidation half-life in air:
10.5hr - 1.05hr, scientific judgement based upon estimated rate
constant for reaction with hydroxyl radicals in air (Howard
1991)
|
|
Photochemical degradation in water : |
Photooxidation half-life in water:
145d - 2.6d, scientific judgement based upon estimated rate
constants for reactions of representative aromatic amines with
·OH and RO2·.
It is assumed that melamine reacts three times as
fast as aniline (Howad 1991).
|
|
Half-life in air, days : |
0.4375 |
10.5hr - 1.05hr, |
0.0437 |
scientific judgement based upon estimated rate constant for reaction with hydroxyl radicals in air. |
145 |
145d - 2.6d, |
2.6 |
scientific judgement based upon estimated rate constants for reactions of representative aromatic amines with ·OH and RO2·. |
|
Howard 1991 |
|
Half-life in soil, days : |
180 |
6mo - 4w, |
28 |
scientific judgement based upon estimated unacclimated aqueous aerobic biodegradation half-life. |
|
Howard 1991 |
|
Half-life in water, days : |
360 |
12mo - 8w, |
56 |
in ground water: scientific judgement based upon estimated unacclimated aqueous aerobic biodegradation half-life. |
|
Howard 1991 |
|
Aerobic degradation in water : |
Aerobic half-life:
6mo - 4w, scientific judgement based upon unacclimated aerobic
aqueous screening test data which confirmed resistance to
biodegradatio (Howard 1991).
|
|
Anaerobic degradation in water : |
Anaerobic half-life:
24mo - 16w, scientific judgement based upon estimated
unacclimated 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 : |
0.38 |
< 0.38, 6w, Cyprinus carpio, conc 2 mg/l, |
3.8 |
< 3.8, 6w, Cyprinus carpio, conc 0.2 mg/l, |
|
Other information of bioaccumulation : |
Confirmed to be non-accumulative or low accumulative (Anon.
1987).
|
|
LC50 values to fishes, mg/l : |
1000 |
48hr, 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.
|
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.
|