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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

Data on physical properties of representative substances in this Category were obtained from a number of secondary sources. The data in these secondary sources are based on a critical evaluation of peer-reviewed data and the selected values are considered to be reliable and representative of the property under investigation. Information in the review process was documented in in the introduction of the source. The use of Klimisch codes (Klimisch et al., 1997), was extended to these secondary sources and a reliability code of (2)valid with restrictions was assigned when using the authoritative secondary source.

Review of the collated information indicates that as gases Category members will partition primarily to air. They have moderate solubility in water and low boiling point. As the boiling point of the representative substances (butene,isobutene, butane, Isobutane) ranges from -6.26 to 3.7°C, their vapour pressure will be above the limit of measurement ( i.e. 10^5Pa) but indicates that the substances will have a high volatility.