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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Key value for chemical safety assessment

Additional information

Endpoint Conclusion:

Justification for classification or non-classification

The registered UVCB substance Reaction products of Reaction products of 3-methylbutanal and 3-methylbut-3-en-1-ol, distillation overheads, acid-treated contains isoprene (0-6%, CAS 78-79-5) which is classified as Muta. Cat 3 according to Directive 67/548/EEC and Muta. Cat 2 according to Regulation (EC) No 1272/2008.

Therefore, a classification

  • with Muta. Cat 3, R68 according to Directive 1999/45/EG and
  • with Muta. Cat 3, H341 according to Regulation (EC) No 1272/2008
is proposed for the registered UVCB substance Reaction products of 3-methylbutanal and 3-methylbut-3-en-1-ol, distillation overheads, acid-treated.