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Physical & Chemical properties

Vapour pressure

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Description of key information

Estimated vapour pressure is 3.12*10^-7 Pa at 25 °C.

Key value for chemical safety assessment

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

Additional information

Based on the REACH Regulation (EC n.1907/2006), Annex VII, Column 2, if the melting point is between 200 and 300 °C, a limit value of vapour pressure based on measurement or a recognised calculation method is sufficient.

According to the OECD TG 104 the vapour pressure of liquids and solids can be estimated by use of the modified Watson correlation, the only experimental data required is the normal boiling point. The method is applicable over the pressure range from 10^5 Pa to 10^-5 Pa. The substance during the DSC analysis showed a decomposition that starts at 289 °C before any melting or boiling occurs.

Therefore, the modified Watson correlation cannot be used. A prediction made by EPI Suite v. 4.11 of the US EPA by a Modified Grain method was conducted and the result of vapour pressure was 3.12 × 10^-7, at 25 °C.

The SMILES notation used for estimation was: O=C(OCC)/C=C(/C)O[Al](OC(/C)=C\C(=O)OCC)OC(/C)=C\C(=O)OCC.