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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 211-854-0 | CAS number: 701-35-9
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
Classification relevant information:
Degradation:
Hydrolysis: < 1 min at pH 4-9 and 1.5 °C (OECD 111)
Biodegradation: not readily biodegradable (1% after 28 d and 0% after 60 d, OECD 310)
Bioaccumulation:
Trichloro(4-methylphenyl)silane: not relevant due to fast hydrolysis
Silanol hydrolysis product (4-methylphenyl)silanetriol:
· Log Kow = -0.6 (QSAR)
· BCF = 0.91 – 3.16 L/Kg (QSAR, EPI Suite v4.1, BCFBAF models)
Aquatic acute toxicity
Aquatic invertebrates: EC50 (48 h) > 100 mg/L (nominal, OECD 202, Daphnia magna) based on read across from CAS 98-13-5
Algae/aquatic plant: ErC50 (72 h) > 100 mg/L (nominal, OECD 201, Pseudokirchneriella subcapitata) based on read across from CAS 98-13-5
Aquatic chronic toxicity
Fish: no data available
Aquatic invertebrates: no data available
Algae/aquatic plant: NOErC (72 h) ≥ 100 mg/L (nominal, OECD 201, Pseudokirchneriella subcapitata) based on read across from CAS 98-13-5
Classification according to CLP
Trichloro(4-methylphenyl)silane (CAS 701-35-9) hydrolysis vigorously to (4-methylphenyl)silanetriol and hydrochloric acid. The silanol hydrolysis product is not considered to be rapidly degradable and the calculated BCF is clearly < 500 L/kg. Acute toxicity data are available for three trophic levels (fish, aquatic invertebrates and algae) while chronic data are available for algae. No acute or chronic hazard was identified. Therefore trichloro(4-methylphenyl)silane (CAS 701-35-9) is not classified and labeled according to the consolidated version of Regulation (EC) No 1272/2008 and further amendments (ATPs).
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.
