Registration Dossier
Registration Dossier
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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.
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nonapotassium 2,4,6-trihydroxy-4-methyl-3,5-dioxa-2,4,6-trisilaheptane-2,6-bis(olate) 2,6,8-trihydroxy-4,6-dimethyl-3,5,7-trioxa-2,4,6,8-tetrasilanonane-2,4,8-tris(olate) 6-hydroxy-2,4,6-trimethyl-1,3,5,2,4,6-trioxatrisilinane-2,4-bis(olate) dihydroxy(methyl)silanolate {[dihydroxy(methyl)silyl]oxy}(hydroxy)methylsilanolate
EC number: 935-877-7 | CAS number: -
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
No data are available on the short-term toxicity of the registered substance to fish. A 96-hour LC50 value of >500 mg/L and NOEC of ≥500 mg/L have however been determined for the effects of a read-across substance, Triethoxy(methyl)silane (CAS 2031-67-6), on mortality of Brachydanio rerio. It is likely that the test organisms were primarily exposed to the hydrolysis products of the substance. The measured data is supported by predictions for the hydrolysis product methylsilanetriol (96-h LC50 value of 100000 mg/l).
Key value for chemical safety assessment
Additional information
No data are available on the short-term toxicity of the registered substance to fish. However, data are available for the read-across substance , triethoxy(methyl)silane (CAS 2031-67-6). Triethoxy(methyl)silane (CAS 2031-67-6), hydrolyses in contact with water at pH 7 (half-life approx. 5.5 hours), producing ethanol and methylsilanetriol. The properties of ethanol are well characterized; it is non-toxic to the environment and it is considered unlikely that its presence would significantly affect the results of tests performed with Triethoxy(methyl)silane. Since both substances share the same silanol product it is considered appropriate to read across the available data on triethoxy(methyl)silane.The measured data is supported by predictions for the hydrolysis product methylsilanetriol (96-h LC50 value of 100000 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.
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