Catalog Number
ACM15244378
Product Name
Nickel(II) sulfate hexa-/ heptahydrate
Category
Metal & Ceramic Materials
Synonyms
UNII-4FLT4T3WUN; Nickelous sulfate hexahydrate; TC-165716; Sulphuric acid, nickel(II) salt; Epitope ID:119679; I14-39308; Nickel(II) sulfate, anhydrous, 99.99% trace metals basis; Nickel(2+) sulfate; AKOS015910995; Sulfuric acid, nickel(2+) salt, hexahydrate;
IUPAC Name
nickel(2+);sulfate;
Molecular Weight
154.749g/mol
Molecular Formula
NiSO4;NiSO4;NiO4S;
Canonical SMILES
[O-]S(=O)(=O)[O-].[Ni+2];
InChI
InChI=1S/Ni.H₂O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2;
InChI Key
LGQLOGILCSXPEA-UHFFFAOYSA-L;
Melting Point
1558 ° F (decomposes) (NTP, 1992);Decomposes @ 840 deg C;No melting point; decomposes at 848 °C;
Density
3.68 at 68 ° F (USCG, 1999);4.01 g/cu cm;3.7 g/cm³;
Solubility
27.3 to 27.7 % weight % at 68° F (NTP, 1992);29.3 G/100 CC WATER @ 0 DEG C;83.7 G/100 CC WATER @ 100 DEG C;INSOL IN ALCOHOL, ETHER, ACETONE;0.11% WT IN METHANOL @ 35 DEG C;0.02% WT IN ETHANOL @ 35 DEG C;38.990 lb/100 lb water at 70 deg F;Solubility in water, g/100ml at 20 °C: 29.3 (freely soluble);
Color/Form
Green-yellow crystals;Pale green;
Covalently-Bonded Unit Count
2
Decomposition
When heated to decomp it emits very toxic fumes of /sulfur oxides/.;Toxic gases and vapors (such as nickel carbonyl) may be released ... in the decomp of nickel cmpd. /Nickel & sol nickel cmpd/;848 °C. This produces toxic fumes of sulfur trioxide and nickel monoxide. See ICSC 0926. See ICSC 1202. Reacts with oxidants. This generates fire and explosion hazard. The solution in water is a weak acid.;
Monoisotopic Mass
153.887g/mol
Other Experimental
Somewhat efflorescent; loses 5 H20 @ about 100 deg C /Hexahydrate/;Aqueous soln is acid; pH about 4.5 /Hexahydrate/;alpha-Form blue to blue-green tetragonal crystals; beta-form green transparent crystals; becomes blue and opaque at room temp; greenish-yellow anhydrous salt formed @ 280 deg C /Hexahydrate/;Sweet astringent taste /Hexahydrate/;VERY SOL IN AMMONIUM HYDROXIDE /HEXAHYDRATE/;Green rhombic; Index of refraction: 1.467, 1.489, 1.492; density: 1.948; MP: 99 deg C (loses H₂O); BP: 103 deg C (loses 6 H20); Solubility in water: 75.6 g/100 cc at 15.5 deg C, 475.8 g/100 cc at 100 deg C; sol in alc /Hepatahydrate/;Blue, tetragonal (alpha form); green monoclinic (beta form); Index of refraction: 1.581, 1.487; density: 2.07; MP: 53.3 deg C (transition pt); BP: 103 deg C (loses 6 H20); Solubility in water: 65.52 g/100 cc at 0 deg C, 340.7 g/100 cc at 100 deg C; solubility in methanol: 12.5 g/100 cc; very sol in alc, ammonium hydroxide /Hexahydrate/;Density: 2.03 g/cu cm /Hexahydrate/;
Physical Description
Anhydrous nickel sulfate is a yellow-green crystalline solid. Nickel sulfate can also be obtained as a hexahydrate (NiSO4.6H₂O (CAS: 10101-97-0) which is blue to emerald green, and as a heptahydrate (NiSO4.7H₂O) (CAS: 10101-98-1) , which is green. Samples can contain variable quantities of water, depending on their previous exposure to moisture or conditions. All forms are mildly toxic and are carcinogenic. All are denser than water. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Used to make other nickel compounds, in printing, and in dyeing of textiles.;DryPowder; DryPowder, Liquid; Liquid; OtherSolid; OtherSolid, Liquid; PelletsLargeCrystals;YELLOW-TO-GREEN CRYSTALS.;
Stability
STABLE @ 40 DEG C /HEXAHYDRATE/;
Topological Polar Surface Area
88.6A^2
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