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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Physical & Chemical properties

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Description of key information

self ignition temperature: 263 °C
not self heating according to UN.4

Key value for chemical safety assessment

Additional information

The self ignition of Nickel hydrogencitrate was tested according to the EU method A.16 using a cube with an edge length of 20 mm and heating up from room temperature until the self ignition temperature was reached. A very sharp increase in the temperature of the test item was observed at an oven temperature of 263 °C, so this value could be stated as the self-ignition temperature.

For CLP-classification as self-heating substance a test according to the guideline UN.4 was performed. No increase of the temperature in the test item of 60 °C above the oven temperature was observed by using a cube with an edge length of 100 mm at a temperature of 140 °C and an exposure period of 24 h. In addition, no signs of ignition were detectable . Therefore, no other experiments were necessary and the test item Nickel hydrogencitrate should be classified as no self-heating substance.