Nickel(II) nitrate

Nickel(II) nitrate
IUPAC name Nickel(II) nitrate
Other names Nickel nitrate Nickelous nitrate Nitric acid, nickel(2+) salt
Identifiers
CAS number	13138-45-9 Y,  13478-00-7 (hexahydrate)
PubChem	25736
ChemSpider	23976 Y
EC number	238-076-4
Jmol-3D images	Image 1
SMILES [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O
InChI InChI=1S/2NO3.Ni/c2*2-1(3)4;/q2*-1;+2 Y Key: KBJMLQFLOWQJNF-UHFFFAOYSA-N Y InChI=1/2NO3.Ni/c2*2-1(3)4;/q2*-1;+2 Key: KBJMLQFLOWQJNF-UHFFFAOYAP
Properties
Molecular formula	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 (hexahydrate)
Boiling point	136.7 °C (hexahydrate)
Solubility in water	94.2 g/100ml (20 °C) 158 g/100ml (60 °C)
Solubility	soluble in ethanol
Refractive index (nD)	1.422 (hexahydrate)
Structure
Crystal structure	monoclinic (hexahydrate)
Hazards
MSDS	External MSDS
EU Index	028-012-00-1
EU classification	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	0 2 0 OX
Flash point	Non-flammable
LD50	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
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Nickel nitrate is the chemical 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. The nitrate anions are not bonded to nickel.

[Ni(H₂O)₆](NO₃)₂ is highly soluble in water, giving emerald green solutions. It is a useful precursor to other nickel(II) derivatives where the water ligands would be replaced. Physicochemical Properties: Nickel nitrate hexahydrate is a green crystal. It's easy in moisture absorption. It disintegrate in dry air. Specific Density:2.05, Melting point:56.7℃, Boiling point: 136.7℃. It decomposes into tetrahydrate by losing four water molecules and then converts into anhydrous salt at temperature of 100℃. It's easily dissolved in water, and is soluble in alcohol, and slightly soluble in acetone. The aueous solution is acidity. It will burn once in contact with organic chemicals. It's harmful to swallow.

Safety

Like other nitrates, nickel nitrate is oxidizing, so that caution should be exercised when it contacts with reducing materials such as organic substances. 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.