Registration Dossier

Administrative data

Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

The documented PNECs are considered adequate for the present REACH risk characterisation. They have been calculated using the current ECHA guideline, including the most conservative assessment factors, and are used for the registration under the regulation 1907/2006 dated June 1st 2007 (REACH) only. They should not be used for other regulatory purposes (e.g., OELs) without further consideration and evaluation.

Conclusion on classification

It is proposed that trimethoxysilane should not be classified in the EU for short-term toxicity on the grounds that it is not toxic to fish, daphnia and algae at a loading rate of 100 mg/l.The rapid hydrolysis of the substance and the low Log KOW of the hydrolysis products indicate that the classification R53 should not apply.