Registration Dossier
Registration Dossier
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EC number: 213-147-2 | CAS number: 927-07-1
Endpoint summary
Administrative data
Description of key information
Additional information
Biodegradation in water:
Under the conditions of a closed bottle test according to OECD 301D (2018), the test item was biotically degraded by 61 % after 28 days. Therefore, the test item is considered to be readily biodegradable.
Bioaccumulation:
The performance of a test for bioaccumulation in aquatic species, preferably fish, is scientifically unjustified.
REACH Regulation No. 1907/2006, Annex IX, Sect. 9.3.2, Col. 2, states as follows:
“9.3.2 The study need not be conducted if:
- the substance has a low potential for bioaccumulation (for instance a log Kow <= 3) and/or a low potential to cross biological membranes, or
- direct and indirect exposure of the aquatic environment is unlikely. ”
Direct and indirect exposure of the test item to water is highly unlikely. Due to the unstable nature of organic peroxides, it can be assumed that upon contact with water and organic matter, the test item undergoes rapid degradation resulting in the formation of respective alcohols and acids. Therefore, tert-butyl peroxypivalate was considered to have no bioaccumulation potential. Using EPIWIN 4.10 a BCF of 32.57 L/Kg wwt was calculated indicating no potential for bioaccumulation.
Transport and distribution:
According to OECD guideline no. 121 and EU method C.19 the log Koc of tert-butyl peroxypivalate was determined to be 1.59 using the HPLC method.
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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