NICKEL OXALATE DIHYDRATE Property

solubility 

insoluble in H2O; soluble in acid solutions,NH2OH 4

form 

Powder

color 

green-white

Water Solubility 

Soluble in acids. Insoluble in water

Merck 

14,6514

Solubility Product Constant (Ksp)

pKsp: 9.4

Exposure limits

NIOSH: IDLH 10 mg/m3; TWA 0.015 mg/m3

CAS DataBase Reference

6018-94-6(CAS DataBase Reference)

Safety

Hazard Codes 

Xn,N,T

Risk Statements 

21/22-20/21/22-50/53-48/23-43-49

Safety Statements 

24/25-36-9-7-61-60-45-36/37-53

RIDADR 

UN3288

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

III

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H312Harmful in contact with skin

H317May cause an allergic skin reaction

H350May cause cancer

H372Causes damage to organs through prolonged or repeated exposure

H400Very toxic to aquatic life

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P201Obtain special instructions before use.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P308+P313IF exposed or concerned: Get medical advice/attention.

P405Store locked up.

P501Dispose of contents/container to..…

NICKEL OXALATE DIHYDRATE Chemical Properties,Usage,Production

Chemical Properties

light green powder(s) . Nickel(II) Oxalate Dihydrate [6018-94-6], Ni(COO)2·2 H2O, Mr 182.76, precipitates as a green powder when oxalic acid or alkali-metal oxalate solutions are added to nickel(II) salt solutions. When heated in vacuum, it evolves water at 150 ℃ and decomposes completely at 300 ℃, giving finely divided nickel suitable for use in catalysis or in the production of nickel carbonyl.

Uses

Nickel oxalate is used for the production of nickel catalysts and magnetic materials.

Uses

It is an important raw material and intermediate used in organic Synthesis, pharmaceuticals, agrochemicals and dyestuffs.

Production Methods

Nickel Oxalate is produced as a greenish white crystalline dihydrate.

Preparation

Nickel(II) oxalate precipitates as NiC2O4?2H2O when oxalic acid is added to nickel salt solutions. It is isomorphous with the oxalates of magnesium, zinc and iron(II), and has μ_eff=2.95 BM. When heated in vacuo it decomposes evolving water above 150° and carbon dioxide above 300° leaving finely divided nickel suitable for catalytic purposes or reacting to form the carbonyl. The oxalate dissolves in acids with decomposition and in ammonia with ammine formation.