Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Justifications and discussions

Category definition:
All category members consist of five carbon atoms and one hydroxy group positioned at the primary carbon atom. Besides the five carbon atoms plus the hydroxyl group being linearly arranged, an allowed structural difference in this group is that molecules can also occur as a butanol containing a methyl side chain.
Category rationale:
They are liquids at room temperature and exhibit similar physiochemical properties. Toxicological and ecotoxicological studies conducted on all substances also led to similar results,