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Data bank of environmental chemicals     |     The Finnish Environment Institute (SYKE)
 


28.3.2024

Data bank of environmental properties of chemicals


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
1848Anon. 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.
3120Howard, 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.
3105MITI 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.

 
 
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