Registration Dossier

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
1 µg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.1 µg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.064 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:
0.13 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential to cause toxic effects if accumulated (in higher organisms) via the food chain

Additional information

Conclusion on classification

Three acute endpoints for three different trophic levels are available for 4 -(1,1 -dimethylethyl)cycolhexyl methacrylate. No effects were found in any of the tests up to the water slubility limit.

The substance is readily biodegradability and has a log Kow of 6.07.

 

Acute classification:

Acute endpoints are all > water solubility limit, therefore under Regulation (EU) No 286/2011 4 -(1,1 -dimethylethyl)cyclohexyl methacrylate is not classified acute aquatic hazardous.

Chronic classification:

The substance is readily biodegradable and the chronic ErC10 for algae is 1.03 mg/L. This is just above the cut-off value for classification and the substance does not need to be classified.

Because only one chronic endpoint is available, chronic classification is also based on acute data, but with no acute effects up to the water solubility limit and 4-(1,1-dimethylethyl)cyclohexyl methacrylate

being readily biodegradable the substance would not get chronic classification.

Proposal for classification: Not classified.