Nickel(II) bromide

Nickel(II) bromide

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Names
IUPAC name Nickel(II) bromide
Other names Nickel dibromide, Nickel bromide, Nickelous bromide
Identifiers
CAS Number	13462-88-9 Y
PubChem	278492
Properties
Chemical formula	NiBr2
Molar mass	218.53 g/mol
Appearance	yellow-brown crystals
Odor	odorless
Density	5.098 g/cm3
Melting point	963 °C (1,765 °F; 1,236 K) sublimes
Solubility in water	113 g/100ml (0 °C) 122 g/100ml (10 °C) 134 g/100ml (25 °C) 144 g/100ml (40 °C) 155 g/100ml (100 °C)
Solubility	soluble in ethanol
Vapor pressure	{{{value}}}
Related compounds
Other anions	nickel(II) fluoride nickel(II) chloride nickel(II) iodide
Other cations	cobalt(II) bromide copper(II) bromide palladium(II) bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Nickel(II) bromide, a chemical compound with the chemical formula NiBr₂, is the nickel salt of hydrobromic acid. It can be made by reacting nickel, nickel(II) oxide, nickel(II) carbonate, or nickel(II) hydroxide with hydrobromic acid. It can also be made by reacting nickel with bromine. It is a weak reducing agent.

It is yellow-brown, rhombohedral, hygroscopic, and is soluble in water and in ethanol. It dissolves in water to make a blue-green solution typical of soluble nickel(II) compounds. It can be used as a source of the bromide ion. It reacts with bases to make nickel(II) hydroxide.

Nickel(II) bromide, like most nickel compounds, is toxic and a suspected carcinogen. It can cause contact dermatitis in skin. The bromide ion is also mildly toxic.