Nickel(II) perchlorate

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Nickel(II) perchlorate
IUPAC name
Nickel(II) perchlorate
Other names
Nickel diperchlorate
Ni(ClO4)2 (anhydrous)
Ni(ClO4)2·6H2O (hexahydrate)
Molar mass 257.59 g/mol (anhydrous)
365.68 g/mol (hexahydrate)
Appearance Greenish solid
Odor Odorless
Melting point 140 °C (284 °F; 413 K) (hexahydrate)
22.25 g/100 ml (0 °C)
25.06 g/100 ml (20 °C)
27.37 g/100 ml (45 °C)
Solubility Soluble in acetone, ethanol, methanol
Insoluble in halocarbons
Vapor pressure ~0 mmHg
Safety data sheet Sigma-Aldrich (hexahydrate)
Flash point Non-flammable
Related compounds
Related compounds
Nickel(II) chloride
Nickel(II) chlorate
Nickel(II) nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Nickel(II) nitrate is the chemical compound with the formula Ni(ClO4)2. It is commonly available as the hexahydrate form, Ni(ClO4)2·6H2O.



Nickel(II) perchlorate will form complex with amines, which are powerful energetic compounds.


Nickel(II) perchlorate is a greenish hygroscopic solid, soluble in water.


Nickel(II) perchlorate is sold by chemical suppliers.


Can be prepared by reacting nickel(II) oxide with perchloric acid, followed by recrystallization.

NiO + 2 HClO4 → Ni(ClO4)2 + H2O

Another route involves adding a solution of nickel(II) sulfate in a solution of barium perchlorate:

NiSO4 + Ba(ClO4)2 → Ni(ClO4)2 + BaSO4

This route produces the hexahydrate form. Anhydrous nickel perchlorate cannot be produced by heating nickel(II) perchlorate hexahydrate, since it decomposes upon heating.




Nickel(II) perchlorate is a powerful oxidizing agent. In contact with strong acids, it will ignite organic material on contact. If a cotton or paper is soaked in nickel perchlorate and left to dry, the resulting material will burn very rapidly in contact with open flame, almost explode.

Since it's a nickel compound, it is irritating to the eyes, skin, respiratory tract, and is also a known allergen and carcinogen.


In closed plastic (HDPE or PTFE) or glass bottles, in a dry place, away from combustible materials and metallic powders.


Nickel perchlorate should be reduced to chloride, then precipitated into an insoluble form and taken to waste disposal centers.



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