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 in 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 cyclohexane has a high vapour pressure and moderate solubility in water with a relative density of lower than water which indicates that if released in the water environment it would float above the water column. Cyclohexane is expected to volatilize from surface waters based on the vapour pressure and a Henry's Law constant of 14900 Pa.m-3.mole-1at 20°C which indicates high volatility.

Cyclohexane meets the general criteria of a flammable liquid, defined as one with a flashpoint of less than 60 °C, because it has a flash point of -20°C. Due to its boiling point (80.7 °C), cyclohexane also fulfils the specific criteria for a Category 2 flammable liquid under GHS (hazard statement of "Highly Flammable Liquid and Vapour") because it has a flash point of less than 23 °C and an initial boiling point of greater than 35 °C.