Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Hydrogen fluoride is a colourless gas, which fumes on contact with air and is completely miscible with water at all proportions. It has a melting point of ca. -83 °C and a boiling point of 19.5 °C so is a gas at room temperature. The ideal gas density of the substance is reported to be 0.818 g/L at 25 °C and 0.97 at 20 °C. The vapour pressure is reported to be 917 mmHg (122 KPa) at 25 °C.

For the liquified form, the density and viscosity are reported to be 1.00-1.02 g/L and 0.256 mPa.s at 0 °C, respectively.

Additional information