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Physical & Chemical properties

Vapour pressure

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Description of key information

The vapour pressure of a commercial sample of Alcohols, C12-15, branched and linear is <0.5 Pa at 20°C, 0.9 Pa at 50°C. 

Key value for chemical safety assessment

Vapour pressure:
0.9 Pa
at the temperature of:
50 °C

Additional information

The vapour pressure values of <0.5 Pa at 20°C and 0.9 Pa at 50°C were determined for Alcohols, C12-15, branched and linear with the use of a static method in accordance with NFT 20-048. The result is considered to be reliable.

It is supported by a QSAR estimated value of 0.05 Pa at 25°C for the UVCB.

Since the submission substance is a UVCB substance, available literature data for the constituents as discussed below are used for environmental exposure modelling.

Dodecan-1-ol has a reported vapour pressure value of 0.11 Pa at 25°C; tetradecan-1-ol has a reported vapour pressure value of 0.3014 Pa at 25°C and pentadecan-1-ol has a reported vapour pressure of 5.1E-03 Pa at 25°C (Daubert and Danner, 1989).

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