Registration Dossier
Registration Dossier
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
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
- Data for the structurally analogous substance tetraethyl orthosilicate (CAS 78-10-4), which shares the same hydrolysis product as the registered substance, indicate that short-term toxicity to invertebrates is low. Tetraethyl orthosilicate hydrolyses rapidly (half-life 4.4 h) to silicic acid and ethanol (CAS 64-17-5). The registered substance, tetramethyl orthosilicate, also hydrolyses rapidly (half-life <3 min at pH 4, 7 and 9 at approximately 20°C) but in this case to silicic acid and methanol (CAS 67-56-1).
- The risk characterisation ratios (RCR) based on PNECaquatic (freshwater) derived from existing data for methanol are <1.
Testing for long-term toxicity to invertebrates is not considered necessary because:
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.
