Nickel sulfate

Description:

Nickel sulfate
Chemical formula: NiSO4·6H2O
There are three kinds of anhydrous, hexahydrate and heptahydrate. Most of the commercial products are hexahydrate, and there are two variants of α-type and β-type. The former is blue tetragonal crystals, and the latter is green monoclinic crystals. It loses six crystal water when heated to 103°C.
Appearance and properties: green crystal, square crystal system.
pH: 4.5
Relative density: 2.031, 1.98 (7 water objects)
Melting point: 31.5°C.
Relative density (water = 1): 2.07
Boiling point (℃): 840 (anhydrous)
Molecular formula: NiSO4·6H2O Molecular weight: 262.86
Main ingredients: pure product
Solubility: Easily soluble in water, slightly soluble in ethanol and methanol, its aqueous solution is acidic, slightly soluble in acid and ammonia.

Application:

Mainly used in the electroplating industry, it is the main nickel salt for electroplating nickel and chemical nickel, and also the source of metal nickel ions.
It is a catalyst for the hydrogenation of fats and oils.
It is used in the pharmaceutical industry as a catalyst for the oxidation reaction in the production of vitamin C.
In the printing and dyeing industry, it is used to produce phthalocyanine brilliant blue complexing agent, which is used as a coal dyeing agent for vat dyes. In addition, it can also be used to produce nickel-cadmium batteries.