Registration Dossier
Registration Dossier
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EC number: 202-409-1 | CAS number: 95-31-8
Endpoint summary
Administrative data
Description of key information
Additional information
TBBS has a hydrolysis half- life of 1.8h (MITI1996) to 9.53 h (Monsanto 1984) and therefore hydrolysis is a significant factor in the aquatic environment. According to REACH Guidance Document R.7c (2017, p. 29) it can be assumed that the rate of hydrolysis is greater than that for uptake by the exposed organisms, where hydrolysis half-life is below 12 h. In these cases, it may sometimes be appropriate to perform a BCF test on the hydrolysis products, if identified, instead of the parent substance. In case of TBBS, MBT and tert-butylamine are identified hydrolysis products for which bioaccumulation tests are available. The experimentally determined BCF of MBT is lower than 8 and the one of tert-butylamine lower than 9; and hence MBT and tert-butylamine and therefore also TBBS are considered to have very low potential for bioaccumulation (MITI, 2000 and 2003).
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