Registration Dossier

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
58 µg/L
Assessment factor:
50
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
1 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
5.8 µg/L
Assessment factor:
500
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
73.6 µg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
7.36 µg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Hazard for air

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.1 mg/kg soil dw
Assessment factor:
1 000
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
222 mg/kg food
Assessment factor:
90

Additional information

Melam is of low ecotoxicity.

Conclusion on classification

Melam is of low ecotoxicity. The LC50/EC50s are above 100 mg/L for the acute exposure. The NOEC for Daphnia at long-term exposure is 2.9 mg/L. The water solubility is 24.5 mg/L; melam is not ready biodegradable, has no bioaccumulation potental and has a low logPow of <-1.0. Altogether there are no indications for a classification of melam, based on ecotoxicity and/or fate and behaviour in the environment.

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

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