Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets



Category name:
Butylene Oligomers - LOA

Justifications and discussions

Category definition:
Butylene Oligomers
Category rationale:
Butylene Oligomers category contains hydrocarbon streams obtained by the oligomerisation of butylenes. The substances within this category consist predominantly of C4, C8, C12, C16 and/or C20 hydrocarbons. The category stream components boil between 100 and 350 °C and the streams contain less than 0.1% butadiene. The physico-chemical properties associated with these types of UVCBs indicated that they comprise a category based on the range of boiling points (from 100°C to 350°C) and will have similar behaviour in the environment. The estimated log Kow ranges from 4.12-9.91 and the streams in this category are considered to be readily biodegradable. The mammalian toxicity information and environmental assessment also indicated that the streams in this category exert similar effects.