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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicological information

Carcinogenicity

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Administrative data

Description of key information

Key value for chemical safety assessment

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 carcinogen Cat 2 according to Directive 67/548/EEC and carcinogen Cat 1B according to Regulation (EC) No 1272/2008.

Therefore, a classification

  • with Carc. Cat 2, R45 according to Directive 1999/45/EG and
  • with Carc. Cat 1B, H350 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.

Additional information