Nickel(II) bromide

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Nickel(II) bromide
Kristallstruktur Cadmiumiodid.png
Bromid nikelnatý.PNG
CAS number 13462-88-9 YesY
PubChem 278492
Molecular formula NiBr2
Molar mass 218.53 g/mol
Appearance yellow-brown crystals
Odor odorless
Density 5.098 g/cm3[1]
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)[2]
144 g/100ml (40 °C)
155 g/100ml (100 °C)
Solubility soluble in ethanol
EU Index Not listed
Main hazards Irritant, corrosive
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point Non-flammable
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 noted otherwise, 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, 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.


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