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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Vapour pressure

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Description of key information

The vapour pressure of Alcohols, C9-11, branched and linear is estimated to be 1.3 Pa at 25°C.

Some constituents of this substance contain a single short-chain side-branch at the 2-position in the alkyl chain, which does not significantly affect the properties (‘essentially linear’). For chemical safety assessment, the properties of such constituents are read-across from the linear alcohol of the equivalent chain length.

Key value for chemical safety assessment

Vapour pressure:
1.3 Pa
at the temperature of:
25 °C

Additional information

The vapour pressure of 1.3 Pa at 25°C was determined by prediction based on the properties of the constituents.

The registration substance is a UVCB, so available data for the constituents are used for environmental exposure modelling on a chain length specific basis.

Nonanol has a reported vapour pressure value of 1.63 Pa at 25°C (Boublik et al., 1984) and 3 Pa at 25°C (Daubert and Danner, 1989); decanol has a reported vapour pressure value of 1.1 Pa at 25 °C (Daubert and Danner 1989) and undecanol has a reported vapour pressure value of 0.39 Pa at 25°C (Daubert and Danner 1989).

The quantified values at ambient temperature from Daubert and Danner are used in environmental modelling.

Discussion of trends in the Category of C6-24 linear and essentially-linear aliphatic alcohols:

As chain length increases, vapour pressure decreases. This is because molecular weight is higher and intermolecular forces in the substance are all higher.