Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
9.95 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.895 mg/kg sediment dw
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:
0.617 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

The data requirements with regard to REACH legislation, annex VII – X, are fulfilled.

According to internationally accepted criteria as outlined in the TGD (ECHA guidance on information requirements and chemical safety assessment, PART R.10, p19) and with regard to the studies described above, long-term results of two trophic levels are represented. There is no major deviation (factor 2) in the magnitude of the acute aquatic toxicity between fish, daphnids and algae therefore not justifying the determination of a most sensitive species.

PNECs for sediment and soil have been calculated with the equilibrium partitioning method using EUSES 2.1.

The following data have been taken into account for the calculation:

Molecular weight [g/mol]

85.1

Melting point [°C]

110

Boiling point [°C]

235

Vapour pressure [hPa], 20°C

0.15

Water solubility [mg/L], 25°C

10000

Log Kow

-0.15

Koc (Kow method) L/kg

8.75

PNEC aqua, freshwater [mg/L]

2.0

   

Conclusion on classification

With regard to the environmental data presented on biodegradation and acute as well as chronic aquatic toxicity methacrylamide has not to be classified as hazardous to the environment acc. EU Regulation Nr. 1272/2008 (CLP-Regulation)