Registration Dossier

Ecotoxicological information

Ecotoxicological Summary

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Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no hazard identified

Marine water

Hazard assessment conclusion:
no hazard identified

STP

Hazard assessment conclusion:
no hazard identified

Sediment (freshwater)

Hazard assessment conclusion:
no hazard identified

Sediment (marine water)

Hazard assessment conclusion:
no hazard identified

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no hazard identified

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

3-Trimethoxysilylpropyl methacrylate hydrolyses in water with a half-life of 1.87 hours at pH 7. This short hydrolysis half-life is such that the hydrolysis products, and not the parent substance, are relevant for environmental risk assessment.

Conclusion on classification

It is proposed that the substance should not be classified in the EU for acute or chronic toxicity on the grounds that reliable short-term studies on fish, Daphnia and algae indicate that it is not toxic at an initial loading rate of the substance of 100 mg/l. The substance is readily biodegradable (though fails the ten-day window criterion) and hydrolyses rapidly. The silanol hydrolysis product has a low log Kow (<3) nd high water solubility.

The substance is classified as follows:

According to Regulation (EC) No 1272/2008:

Aquatic Acute Not classified.

Aquatic Chronic Not Classified

According to Directive 67/548/EEC: Not classified