Nickel(II) sulfate heptahydrate Chemical Properties

Density 

1.948 g/mL at 25 °C(lit.)

solubility 

soluble in ethanol

form 

Needle-Like Crystals or Powder

color 

Green to dark green

Water Solubility 

g/100g H2O: 26.2 (0°C), 37.7 (20°C), 50.4 (40°C) [LAN05]; soluble alcohol [HAW93]

Merck 

13,6541

InChI

1S/Ni.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2

InChIKey

OGKAGKFVPCOHQW-UHFFFAOYSA-L

SMILES

[Ni++].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[O-]S([O-])(=O)=O

CAS DataBase Reference

10101-98-1(CAS DataBase Reference)

EPA Substance Registry System

Sulfuric acid, nickel(2+) salt (1:1), heptahydrate (10101-98-1)

Safety Information

Hazard Codes 

Xn,N,T

Risk Statements 

22-40-42/43-50/53-68-48/23-38-20/22-61-49

Safety Statements 

22-36/37-60-61-45-53

RIDADR 

UN 3077 9/PG 3

WGK Germany 

3

RTECS 

WT1157000

HS Code 

28332400

Storage Class

6.1D - Non-combustible acute toxic Cat.3
toxic hazardous materials or hazardous materials causing chronic effects

Hazard Classifications

Acute Tox. 4 Inhalation
Acute Tox. 4 Oral
Aquatic Acute 1
Aquatic Chronic 1
Carc. 1A Inhalation
Muta. 2
Repr. 1B
Resp. Sens. 1
Skin Irrit. 2
Skin Sens. 1
STOT RE 1 Inhalation

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS

Nickel(II) sulfate heptahydrate Usage And Synthesis

Chemical Properties

green to dark green needle-like crystals or powder

Uses

In electrolytic and electroless nickel-plating; as mordant in dyeing; in catalyst manufacture; in preparation of other nickel Compounds.

Uses

Nickel(II) sulfate hexahydrate may be used in the preparation of NiFe₂O₄ nanoparticles (NPs), required for the fabrication of a glucose biosensor.

Definition

ChEBI: A hydrate of nickel sulfate containing nickel (in +2 oxidation state), sulfate and water moieties in the ratio 1:1:7.

General Description

Nickel(II) sulfate hexahydrate is a hydrated nickel salt. Its thermal decomposition in the presence of air and helium has been studied. Its crystals exist in monoclinic and tetragonal polymorphic forms.

Synthesis

To be refined nickel sulfate dissolved in water, add an excess of concentrated ammonia, so that all the nickel into nickel-ammonia coordination compounds, and then add a small amount of hydrogen peroxide, stirring thoroughly, filtration to remove the Fe (OH) 3 precipitate generated. To the filtrate was added a concentrated NaClO4 solution, at which time Ni2+ was generated almost quantitatively as [Ni(NH3)6](ClO4)2 precipitate, the precipitate was filtered out and washed well with water. The precipitate was transferred to a beaker, pure sodium carbonate solution was added and heated to volatilize out the NH3 to produce nickel carbonate precipitate. After separating the mother liquor by decantation, the precipitate is washed repeatedly with distilled water to produce the purest possible nickel carbonate. Dissolve nickel carbonate with dilute sulfuric acid to get pure nickel sulfate solution. This solution is evaporated and concentrated, and then crystallized at a temperature lower than 20??C to produce crystals of the heptahydrate NiSO4-7H2O.

Nickel(II) sulfate heptahydrate(10101-98-1)Related Product Information

• Ferrous sulfate
• Magnesium chloride hexahydrate
• Nickel sulfate
• Nickel sulfate hexahydrate
• NICKEL SULFITE
• Nickel
• NICKEL SULFATE
• NICKEL AMMONIUM SULFATE
• Nickel(II) sulfate heptahydrate