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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Description of key information

A study on vapour pressure does not need to be conducted.

Key value for chemical safety assessment

Vapour pressure:
0.003 hPa
at the temperature of:
20 °C

Additional information

According to REACH Annex XI, 2. the determination of the vapour pressure of AAPB is not necessary, because it is technically not possible: the expected value of vapour pressure for the pure substance cannot be measured due to residual content of solvent (water, isopropanol) which results in a higher solvent vapour pressure than test substance vapour pressure. The residual content of solvent cannot be reduced below the limit of measurement with reasonable effort.