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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

Measured ecotoxicity data are not available for the aquatic toxicity endpoints.PNECs have not been derived for freshwater, saltwater, sediment, and soil.

In accordance with column 2 of REACH Annex VII and VIII, the acute toxicity tests do not need to be conducted if there are mitigating factors indicating that aquatic toxicity is unlikely to occur. This Category consists of streams which are gas at standard temperature and pressure and is expected to partition primarily to air; therefore aquatic toxicity tests may not be relevant. In addition, it is technically difficult to maintain aqueous concentrations of gases for toxicity testing.

Conclusion on classification

Cas Numbers 92045-23-3 and 95465-89-7 are both listed in Annex I of Directive 67/548/EEC replaced by Table 3.2 in Annex VI to CLP  Annex I but are not classified for environmental hazards. Additionally constituent substances, butane, isobutene, butene, isobutene are listed in Annex 1 of Directive 67/548/EEC replaced by Table 3.2 in Annex VI to CLP but are not classified for environmental hazards. This Category would not be classified for environmental hazards