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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Acrylonitrile is reported to be a clear, colourless liquid with a faintly pungent odour (Kirk-Othmer, 2001) which is highly soluble in water (73 g/L at 20 oC). The test substance has a freezing point of -83.5 °C (Kirk-Othmer, 2001) and a boiling point of 77.3 °C at atmospheric pressure. The density of acrylonitrile at 20 °C is reported to be 0.806 g/mL (Kirk-Othmer, 2001) and 0.8004 g/mL at 25 °C (American Cyanamid, 1959). The vapour pressure of acrylonitrile is reported to be 11.5 kPa at 20 °C (Kirk-Othmer, 2001) and 133.3 hPa at 23.6 °C (Ullman, 1974). A surface tension study is not required as surface activity is not a desired property of the acrylonitrile.

The partition coefficient of acrylonitrile was measured to be 1.04 at 21 °C, log10 Pow 1.65x10-2 (Butler et al., 2014). The Log Pow for acrylonitrile is also reported to be 0.25 at 25 °C (Pratesi et al.,1979), 0.11 at 25 °C (CITI, 1996) and 0.08 at 25 °C (BASF AG).

The substance is not classified under any physical hazard EU CLP endpoint apart from Flammable liquids (as a Flammable Liquid category 2) - it has a flash point of 0 °C at atmospheric pressure (Kirk-Othmer, 2001). It has an auto ignition temperature of 481 oC at atmospheric pressure.

Additional information