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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Water solubility

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Administrative data

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water solubility
Type of information:
experimental study
Adequacy of study:
key study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
no guideline followed
Principles of method if other than guideline:
No method stated, result from published paper.
GLP compliance:
not specified
Type of method:
other: Original publication not available. Information taken from Gmelin - Handbook of Inorganic and Organometallic Chemistry
Specific details on test material used for the study:
Measurement performed on zinc hexafluorosilicate hexahydrate
Key result
Water solubility:
715 g/L
Conc. based on:
test mat.
20 °C
< 3.2
Details on results:
The substance is not stable at pH>3.2. If dissolved in demineralized water the substance decomposes resulting in the formation of hydrogen fluoride and zinc ions. The pH value will decrease until stable cpH-conditions for the substance are achieved.
The solubility in water was determined as 715 g/L at 20 °C and a pH value <3.2.

Description of key information

The solubility in water was determined as 715 g/L at 20 °C and a pH value <3.2.

Key value for chemical safety assessment

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

Additional information

The substance decomposes > 3.2.