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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 211-656-4 | CAS number: 681-84-5
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
(48-hour) EC50: >75 mg/l on mobility Daphnia magna, reliability 2 (read-across from CAS 78-10-4).
Key value for chemical safety assessment
Additional information
There are no reliable data for the substance. However a 48-hour EC50value of >75 mg/l and NOEC of ≥75 mg/l have been determined for the effects of the structurally analogous substance, tetraethyl orthosilicate (CAS 78-10-4), based on mobility of Daphnia magna and mean measured concentration (>500 mg/L and ≥500 mg/L respectively based on nominal concentration). Under the flow-through exposure conditions used in the test it is likely that the test organism were primarily exposed to the test substance.
This read-across study is considered to be reliability 1 (reliable without restrictions); however the read across of the results is considered to be reliability 2 (reliable with restrictions).
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.
