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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Vapour pressure

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Administrative data

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Description of key information

0.000129 Pa at 20 °C  and 0.000155 Pa at 25 °C

Key value for chemical safety assessment

Additional information

The vapour pressure of Nickel hydrogencitrate was measured according to OECD 104 (effusion method following Knudsen) under GLP-conditions. The stated values are 0.000129 and 0.000155 Pa at 20 and 25 °C, respectively.


Nickel hydrogencitrate and Trinickel dicitrate are comparable: Since citric acid is a multifunctional acid, at different pH values various intermediate ions like citrate, hydrogencitrate and dihydrogencitrate are formed.