Nickel(II) sulfate hexa-/ heptahydrate

CAS

15244-37-8

Catalog Number

ACM15244378

Category

Metal & Ceramic Materials

Molecular Weight

154.749g/mol

Molecular Formula

NiSO4;NiSO4;NiO4S;

MSDS COA Spec Sheet

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Specification

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;

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;

Complexity

62.2

Covalently-Bonded Unit Count

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.;

EC Number

232-104-9

Exact Mass

153.887g/mol

H-Bond Acceptor

Heavy Atom Count

ICSC Number

0063

Monoisotopic Mass

153.887g/mol

Odor

Odorless;

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.;

RTECS Number

QR9350000

Stability

STABLE @ 40 DEG C /HEXAHYDRATE/;

Topological Polar Surface Area

88.6A^2

UNII

4FLT4T3WUN

UN Number

3077