Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

There are no reliable aquatic toxicity data available for tri(isopropoxy)(vinyl)silane (CAS 18023-33-1), therefore good quality data for the structurally-related substance, trimethoxy(vinyl)silane (CAS 2768-02-7), have been read across.

Reliable short-term and long-term toxicity tests results are available for freshwater invertebrates (Daphnia magna) and algae (Pseudokirchneriella subcapitata) for trimethoxy(vinyl)silane (CAS 2768-02-7). The relevant short-term values are:

Daphnia: EC50 (48 h): 168.7 mg/l, equivalent to 120 mg/l (expressed in terms of concentration of the hydrolysis product, vinylsilanetriol); NOEC: not determined.

Algae: ErC50 (72 h): > 89 mg/l; ErC10 >=89 mg/l, equivalent to >64 mg/l (expressed in terms of concentration of the hydrolysis product, vinylsilanetriol).

Numerous supporting results and long-term data are available for the read across substance but are not read-across here.

The rapid hydrolysis of trimethoxy(vinyl)silane (CAS 2768-02-7) (half-life 0.1 h at pH 7 and 20-25 °C) means it is likely that the test organisms in each test were exposed primarily to the hydrolysis products, vinylsilanetriol and methanol.

Refer to IUCLID Section 6 endpoint summary for further discussion of the approach to chemical safety assessment and justification for read across.