Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.001 mg/L

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

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

Hazard for air

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.002 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no or insufficient data available at present

Additional information

The available ecotoxicological data are based on triisopropylsilanol, one of the hydrolytic products of triisopropylsilyl acrylate. Therefore, the PNECs were derived based on the information of triisopropylsilanol.

Due to the lack of relevant experimental data for the calculations of PNEC in sediment and in soil, the equilibrium partitioning method (EPM) was used. The following physcicochemical properties of triisopropylsilanol were used for derivation of PNECs in soil and sediment.

Molecular weight: 174.36

Water solubility: < 0.7 mg/l at 20°C

Estimated log Pow: 3.8684

Estimated vapour pressure: 1.25 Pa at 25°C

PNEC oral is not submitted due to the lack of the relevant data at this level of registration.

Conclusion on classification

Triisopropylsilyl acrylate is classified as R50 Very toxic to aquatic organisms, and R53 May cause long-term adverse effects in the aquatic environment under Council Directive 67/548/EEC and Chronic Category 1, H410: Very toxic to aquatic life with long lasting effects / Acute Category 1, H400: Very toxic to aquatic life, with M-factor of 10, under Regulation (EC) No 1272/2008 with available ecotoxicological information.