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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Description of key information

Zinc borates are ‘sparingly soluble salts,’ particularly the anhydrous form. Hydrolysis under dilute conditions leads to zinc hydroxide (via zinc oxide) and boric acid. Zinc hydroxide solubility is extremely low under neutral and basic conditions, leading to a situation where zinc borate hydrolyzes to zinc hydroxide and boric acid more quickly than it solubilizes. Under physiological conditions and typical environmental concentrations with neutral and lower pH, zinc borate can be considered to hydrolyze to zinc hydroxide and boric acid.

Key value for chemical safety assessment

Additional information