Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.51 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
2 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.051 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
200 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
5.5 mg/kg sediment dw
Assessment factor:
1
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.55 mg/kg sediment dw
Assessment factor:
1
Extrapolation method:
equilibrium partitioning method

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
1.6 mg/kg soil dw
Assessment factor:
1
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
22 mg/kg food
Assessment factor:
30

Additional information

Melamine is of low ecotoxicity.

Conclusion on classification

Melamine is of low ecotoxicity. The LC50/EC50s are well above 100 mg/L. The long-term NOECs for the usually taken representative species fish, Daphnia and algae range from 5.1 to 98 mg/L. The water solubility is ca. 3.5 g/L; melamine is not readily biodegradable and has a low logPow of ca. -1.2. Altogether there are no indications for a classification of melamine, based on ecotoxicity and/or fate and behaviour in the environment.

Melamine is not a PBT or vPvB-substance because of the low bioconcentration potential, the low partition coefficient n-octanol/water and the low ecotoxicity.