Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Water solubility

Currently viewing:

Administrative data

Link to relevant study record(s)

water solubility
Type of information:
experimental study
Adequacy of study:
key study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
equivalent or similar to guideline
OECD Guideline 105 (Water Solubility)
not applicable
Principles of method if other than guideline:
There is experimental information that a 60.97% solution can be prepared and hence the substance is considered to be readily soluble in water.
GLP compliance:
Type of method:
other: the method was not reported but considering the high water solubility, it is very likely that a method similar to the flask method has been used.
Water solubility:
>= 60.97 other: percent
Conc. based on:
test mat.
Remarks on result:
other: temperature and pH not reported
Water solubility: at least up to 60.97%.

Description of key information

Hexafluorosilicic acid is known to be miscible with water.

Key value for chemical safety assessment

Water solubility:
609.7 g/L
at the temperature of:
20 °C

Additional information

Hexafluorosilicic acid is known to be miscible with water up to at least 60.97%.