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Nickel nitrate

Nickel(II) nitrate
Nickel(II) nitrate
Nickel(II) nitrate
Names
IUPAC name
Nickel(II) nitrate
Other names
Nickel nitrate
Nickelous nitrate
Nitric acid, nickel(2+) salt
Identifiers
13138-45-9 YesY
13478-00-7 (hexahydrate) N
3D model (Jmol) Interactive image
ChemSpider 23976 YesY
ECHA InfoCard 100.032.774
EC Number 238-076-4
PubChem 25736
Properties
Ni(NO3)2
Molar mass 182.703 g/mol (anhydrous)
290.79 g/mol (hexahydrate)
Appearance emerald green hygroscopic solid
Odor odorless
Density 2.05 g/cm3 (hexahydrate)
Melting point 56.7 °C (134.1 °F; 329.8 K) (hexahydrate)
Boiling point 136.7 °C (278.1 °F; 409.8 K) (hexahydrate)
243 (hexahydrate) g/100ml (0 °C)
Solubility soluble in ethanol
+4300.0·10−6 cm3/mol (+6 H2O)
1.422 (hexahydrate)
Structure
monoclinic (hexahydrate)
Hazards
Safety data sheet External MSDS
Oxidant (O)
Carc. Cat. 1
Muta. Cat. 3
Repr. Cat. 2
Toxic (T)
Harmful (Xn)
Irritant (Xi)
Dangerous for the environment (N)
R-phrases R49, R61, R8, R20/22, R38, R41, R42/43, R48/23, R68, R50/53
S-phrases S53, S45, S60, S61
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroform Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazard OX: Oxidizer. E.g., potassium perchlorateNFPA 704 four-colored diamond
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
LD50 (median dose)
1620 mg/kg (oral, rat)
Related compounds
Other anions
Nickel(II) sulfate
Nickel(II) chloride
Other cations
Palladium(II) nitrate
Related compounds
Cobalt(II) nitrate
Copper(II) nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YesYN ?)
Infobox references

Nickel nitrate is the inorganic compound Ni(NO3)2 or any hydrate thereof. The anhydrous form is not commonly encountered, thus "nickel nitrate" usually refers to nickel(II) nitrate hexahydrate. The formula for this species is written in two ways. Ni(NO3)2.6H2O and, more descriptively [Ni(H2O)6](NO3)2. The latter formula indicates that the nickel(II) center is surrounded by six water molecules in this hydrated salt. In the hexahydrate, the nitrate anions are not bonded to nickel. Also known are three other hydrates: Ni(NO3)2.9H2O, Ni(NO3)2.4H2O, and Ni(NO3)2.2H2O. Anhydrous Ni(NO3)2 is also known.

It is prepared by the reaction of nickel oxide with nitric acid:

The anhydrous nickel nitrate is typically not prepared by the heating the hydrates. Rather is generated by reaction of hydrates with dinitrogen pentoxide or of nickel carbonyl with dinitrogen tetroxide:

The hydrated nitrate is often used as a precursor to supported nickel catalysts.

Like other nitrates, nickel nitrate is oxidizing. It is also irritating to the eyes, skin and, upon inhalation of the dust, respiratory tract. It may cause skin allergy. Nickel nitrate is a carcinogen, along with most other nickel compounds. The nickel ion is also toxic to aquatic organisms.


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