Registration Dossier

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The vapour pressure of a 10% aqueous solution of hexafluorosiclic acid is reported to be 2.30 kPa at 20 degrees Celcius. The vapour pressure of a 35% aqueous solution of hexafluorosilicic acid is reporetd to be 30 hPa at 20 degrees Celsius. However the reported vapour pressure is considered likely to be attributable to the release of hydrogen fluoride vapour (IPCS, 2004

Key value for chemical safety assessment

Vapour pressure:
2 300 Pa
at the temperature of:
293 K

Additional information

The vapour pressure of a 10% aqueous solution of hexafluorosiclic acid is reported to be 2.30 kPa at 20 degrees Celcius (REACH Centre, 2010). The vapour pressure of a 35% aqueous solution of hexafluorosilicic acid is reporetd to be 30 hPa at 20 degrees Celsius. However the reported vapour pressure is considered likely to be attributable to the release of hydrogen fluoride vapour (IPCS, 2004).