Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 232-136-3 | CAS number: 7787-93-1
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
96 h LC50: >107 mg/l, mortality, C. carpio, or >86 mg/l when expressed in terms of the silanol hydrolysis product (3-chloropropyl)methylsilanediol.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 574 mg/L
Additional information
A 96-hour LC50 value of >107 mg/l and NOEC of ≥107 mg/l have been determined for the effects of the registered substance on mortality of Cyprinus carpio. The results are interpreted with reference to estimated concentrations of the test substance. However, due to the very rapid hydrolysis of the registered substance, it is very likely that the test organisms were exposed to its hydrolysis products rather than the parent substance. The results may be expressed in terms of concentration of the hydrolysis product, (3-chloropropyl)methylsilanediol, by applying a molecular weight correction: (MW of silanol = 154.67 / MW of parent = 191.56) * LC50 = >107 mg/l = >86 mg/l as (3-chloropropyl)methylsilanediol.
The result is supported by a 96-hour LC50 non-limit value of 574 mg/l for the structurally analogous read-across substance (3-chloropropyl)diethoxymethylsilane (CAS 13501-76-3) with Brachydanio rerio (new name: Danio rerio).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
