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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 617-969-6 | CAS number: 87135-01-1
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Toxicity to aquatic algae: 72 hr EC50 >100 mg/l and NOEC ≥100 mg/l (nominal) (highest concentration tested) (OECD 201). The EC50 is equivalent to >74 mg/l and the NOEC to ≥100 mg/l when expressed in terms of the silanol hydrolysis product.
Key value for chemical safety assessment
Additional information
A 72-hour E(L)C50 value of >100 mg/l and NOEC of ≥100 mg/l (nominal) (highest concentration tested) have been determined for the effects of 1,6-bis(trimethoxysilyl)hexane (CAS 87135-01-1) on growth rate of Pseudokirchneriella subcapitata.
In view of the test media preparation method/exposure regime it is likely that the test organisms were exposed predominantly to the hydrolysis products of the tested substance.
The results may be expressed in terms of concentration of the hydrolysis product, 1,6-bis(trihydroxysilyl)hexane, by applying a molecular weight correction: (MW of silanol = 242.38 / MW of parent = 326.54) * >100 = >74 mg/l.
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.
