Registration Dossier
Registration Dossier
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EC number: 216-467-0 | CAS number: 1591-02-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
72-h EC50 >118 mg/l, (highest concentration tested, measured by DOC, according to OECD 201), read-across from CAS 1066-42-8
Key value for chemical safety assessment
Additional information
No data are available with the registered substance, however data are available with the silicon hydrolysis product dimethylsilanediol (CAS 1066-42-8). A 72-hour EC50 value of >118 mg/L and a NOEC of ≥118 mg/L have been determined for the effects of dimethylsilanediol on growth rate of Pseudokirchneriella subcapitata.
Dibutoxy(dimethyl)silane also produces butan-1-ol (n-butanol) as a result of hydrolysis. An OECD SIDS (2001) is available with butanol (CAS 71-36-3) indicating an algal (Selenastrum capricornutum) EC50 vaue of 225 mg/L. A NOEC of 129 mg/L was also determined in the same test.
Reference: OECD (2001) SIDS Initial Assessment Report for SIAM 13, n-Butyl Alcohol, CAS 71-36-3
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