NICKEL(II) HYDROXIDE

CAS NO.：12054-48-7
Empirical Formula: H2NiO2
Molecular Weight: 92.71
MDL number: MFCD00011140
EINECS: 235-008-5
SAFETY DATA SHEET (SDS)
Update Date: 2024-08-05 20:55:42

What is NICKEL(II) HYDROXIDE?

Chemical properties

Black powder.

Chemical properties

Nickel hydroxide is a light, apple-green powder.

The Uses of NICKEL(II) HYDROXIDE

Nickel salts.

The Uses of NICKEL(II) HYDROXIDE

Due to its redox behavior, it finds use in rechargeable battery electrodes. It is useful for the storage of electrochemical energy, with potential applications in car batteries. It is a potential material for several biological applications, for example in chromosomal DNA quantification assay.

The Uses of NICKEL(II) HYDROXIDE

Nickel hydroxide was used as a reference material in a study where the influence of stacking faults on the electrochemical activity of Ni(OH)₂ electrodes was studied.

Preparation

This is precipitated as finely divided green powder when an alkali metal hydroxide solution is added to an aqueous solution of a nickel(II) salt. It is frequently difficult to filter at first but becomes more crystalline upon prolonged standing. If the nickel salt is incompletely precipitated, especially if very strong solutions of nickel(II) are used, then the precipitate may be a basic salt. This is particularly true of the halides, in which case compounds such as NiCl2?3Ni(OH)2 and NiCl2?Ni(OH)2 have been characterized.

Production Methods

Nickel hydroxide is obtained either by treating nickel sulfate solution with sodium hydroxide or by hot alcohol extraction of the precipitate formed as a result of the reaction of nickel nitrate with potassium hydroxide. Nickel hydroxide is used for the manufacture of nickel–cadmium electric cells, and as an intermediate product during the manufacture of nickel catalysts.

Hazard

Confirmed carcinogen.

Flammability and Explosibility

Non flammable

Safety Profile

Confirmed carcinogen with experimental carcinogenic and tumorigenic data. Poison by subcutaneous route. See also NICKEL COMPOUNDS.

Potential Exposure

It may be found in the workplace as a dust, liquid, or acid solution. This compound may be used in nickel plating operations.

Shipping

UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard Class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.

Incompatibilities

Incompatible with strong acids. Aqueous solution may be acidic.

Waste Disposal

Recover and recycle where possible or dispose of in a chemical waste landfill.

Properties of NICKEL(II) HYDROXIDE

Melting point:	230°C (dec.)
Density	4.1g/mL(lit.)
form	Powder
color	Green
PH	8.37(1 mM solution);8.37(10 mM solution);8.37(100 mM solution)
Water Solubility	Insoluble in water. Soluble in dilute acid.
Merck	13,6534
Solubility Product Constant (Ksp)	pKsp: 15.26
Exposure limits	ACGIH: TWA 0.2 mg/m3 NIOSH: IDLH 10 mg/m3; TWA 0.015 mg/m3
Stability:	Stable. Incompatible with strong acids, water, moisture.
InChI	InChI=1S/Ni.2H2O/h;2*1H2/q+2;;/p-2
CAS DataBase Reference	12054-48-7(CAS DataBase Reference)
EPA Substance Registry System	Nickel hydroxide (Ni(OH)2) (12054-48-7)

Safety information for NICKEL(II) HYDROXIDE

Signal word	Danger
Pictogram(s)	Exclamation Mark Irritant GHS07 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H315:Skin corrosion/irritation H317:Sensitisation, Skin H334:Sensitisation, respiratory H341:Germ cell mutagenicity H372:Specific target organ toxicity, repeated exposure H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P202:Do not handle until all safety precautions have been read and understood. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352:IF ON SKIN: wash with plenty of soap and water. P308+P313:IF exposed or concerned: Get medical advice/attention.