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Physical & Chemical properties

Melting point / freezing point

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Melting point (as reported in the EU Risk Assessment for nickel sulphate, 2008-2009):
-anhydrous: 840 degrees celsius
-anhydrous: 848 degrees celsius (decomposition)
-hexahydrate: 53 degrees celsius (loss of water of crystallisation on heating)
-heptahydrate: 99 degrees celsius

Key value for chemical safety assessment

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