Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

Data on physical properties 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 on the review process was documented 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, the Butenes category members will partition primarily to air. They have moderate solubility in water (based on measurement in a closed system) and low boiling point. As the boiling point of the butenes ranges from -6.26 to 3.7 °C, their vapour pressures will be above the limit of measurement (i.e. 10^5 Pa) but indicate that the substances will have a high volatility.