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EC number: 207-938-1
CAS number: 502-44-3
The half-life for hydrolysis of e-Caprolactone (Capa monomer) in sterile
aqueous solution (at a concentration of ca 1 g/L) was 15.7, 52.5 and 2.2
days at pH values of 4, 7 and 9, respectively (OECD 111). At all pH
values the hydrolysis product was 6-hydroxyhexanoic acid which was
stable to any further hydrolysis.
The test substance can be classified as readily biodegradable.
Requirements for bioaccumulation testing and adsorption/desorption
testing were waived as the log Pow value of
e-caprolactone (Capa monomer) is 0.32 (see section 4.7, partition
According to column 2 of Annex IX of the REACH Regulation, no
bioaccumulation study is required if the log Pow is
below the trigger of 3 as the substance can be expected to have a low
potential for bioaccumulation. Furthermore, simulation testing in water
and/or sediment and in soil does not need to be conducted as the
substance is readily biodegradable.
According to column 2 of Annex VIII of the REACH regulation, no
adsorption/desorption study is required if the log Pow
is below the trigger of 3 as the substance can be expected to have a low
potential for adsorption. Based on the log Pow value
of 0.32 (OECD 117), the substance can be expected to have a low
potential for adsorption.
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.
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