ChemicalBook > CAS DataBase List > Nickel(II) oxide

Nickel(II) oxide

Physical Properties Occurrence Uses Preparation Reactions

Nickel(II) oxide

CAS No.1313-99-1
Chemical Name:Nickel(II) oxide
CBNumber:CB2358284
Molecular Formula:NiO
Formula Weight:74.69
MOL File:1313-99-1.mol

Nickel(II) oxide Property

Melting point 1960 °C
Density 6.67 g/mL at 25 °C(lit.)
bulk density 0.51g/mL
solubility insoluble in H2O; soluble in acid solutions
form Powder/Solid
color green
Specific Gravity 6.67
Viscosity 1.3cP
Water Solubility insoluble
Crystal Structure NaCl type
crystal system Cube
Merck 14,6512
Space group Fm3m
Lattice constant
a/nm b/nm c/nm α/o β/o γ/o V/nm3
0.418 0.418 0.418 90 90 90 0.073
Exposure limits ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 10 mg/m3; TWA 0.015 mg/m3
Stability Stable. Incompatible with strong acids.
InChI InChI=1S/Ni.O
InChIKey GNRSAWUEBMWBQH-UHFFFAOYSA-N
SMILES O=[Ni]
CAS DataBase Reference 1313-99-1(CAS DataBase Reference)
EWG's Food Scores 5
FDA UNII C3574QBZ3Y
EPA Substance Registry System Nickel(II) oxide (1313-99-1)
UNSPSC Code 26111700
NACRES NA.23

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.418	0.418	0.418	90	90	90	0.073

Safety

Hazard Codes :T,Xi
Risk Statements :49-43-53-48/23-36/37
Safety Statements :53-45-61-36/37-26
RIDADR :3288
WGK Germany :1
RTECS :QR8400000
TSCA :Yes
HS Code :28254000
Hazardous Substances Data :1313-99-1(Hazardous Substances Data)

NFPA 704:

	0
3		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordDanger
Hazard statements H317-H350i-H372-H413
Precautionary statements P202-P260-P273-P280-P302+P352-P308+P313

Nickel(II) oxide Price More Price(57)

Brand: Sigma-Aldrich(India)
Product number: 637130
Product name : Nickel(II) oxide
Purity: nanopowder, <50?nm particle size (TEM), 99.8% trace metals basis
Packaging: 25G
Price: ₹4900
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 921602
Product name : NiO nanoparticle ink solution
Purity: 2.5?wt. %, viscosity 1.3?cP
Packaging: 10ML
Price: ₹10684.28
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 637130
Product name : Nickel(II) oxide
Purity: nanopowder, <50?nm particle size (TEM), 99.8% trace metals basis
Packaging: 100G
Price: ₹12410
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 774545
Product name : Nickel(II) oxide
Purity: nanowires, diam. × L ~20?nm × 10?μm
Packaging: 500MG
Price: ₹18260
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 637130
Product name : Nickel(II) oxide
Purity: nanopowder, <50?nm particle size (TEM), 99.8% trace metals basis
Packaging: 250G
Price: ₹23330
Updated: 2022/06/14
Buy: Buy

Nickel(II) oxide Chemical Properties,Usage,Production

Physical Properties Green cubic crystals; transforms to a grayish black octahedral form, known as black oxide, when strongly ignited; black oxide has a metallic luster; density of green oxide is 6.72 g/cm3; Mohs hardness 5.5; melts at 1955°C; insoluble in water; soluble in acids at ordinary temperatures; black form dissolves in hot acids.
Occurrence The oxide occurs in nature in the mineral, bunsenite.
Uses Nickel (II) oxide is used in the ceramic industry for making frit, ferrites, and coloring porcelain. The oxide in sinter form is used in the production of nickel- steel alloys. It supplies oxygen to the melt for removal of carbon as carbon dioxide. Some other important uses of Nickel (II) oxide include preparation of many nickel salts, specialty chemicals, and nickel catalysts. It also is used as an electrode in fuel cells.
Preparation Nickel (II) oxide is prepared by heating pure nickel powder with oxygen at a temperature above 400°C. In some commercial processes, green Nickel (II) oxide is made by heating a mixture of nickel powder and water in air at 1,000°C. Adding some Nickel (II) oxide to the above mixture enhances the rate of reaction. An alternative method of preparation of the green oxide involves thermal decomposition of an oxo acid salt of nickel at elevated temperatures. Thus, nickel nitrate, nickel sulfate or, more conveniently, nickel carbonate when heated at 1,000°C, yields the green oxide. The black oxide, on the other hand, is produced at a lower temperature from incomplete calcination of the carbonate or nitrate salt at 600°C. The oxygen content of the black form is slightly greater than its green counterpart.
Reactions Several nickel salts are obtained by reactions of nickel oxide with mineral acids. Thus, the reaction of black nickel oxide with hot dilute sulfuric acid forms nickel sulfate, NiSO4•6H2O. Similarly, dilute nitric acid, hydrochloric, and hydrobromic acids when heated react with the black form of nickel oxide to yield corresponding nickel salts as hexahydrates.
Heating nickel oxide with hydrogen, carbon, or carbon monoxide reduces it to metallic nickel.
Nickel oxide combines with sodium or potassium hydroxide at elevated temperatures (>700°C), forming sodium or potassium nickelate; i.e., K2NiO2:
NiO + 2NaOH → Na2NiO2 + H2O
Chemical Properties Nickel(II) oxide is Brownish black or black powder.
Uses Nickel oxide nanowires have been studied for use in magnetic memory devices; as well as in luminescent materials.
Uses Nickel(II) oxide is used in the preparation of nickel alloys including nickel steel alloys, manufacture of glass and porcelain paints. Further nickel oxide is the main component in nickel-iron battery (Edison battery), nickel-cadmium rechargeable battery, and also used in ceramic industry for making frits and porcelain glazes. It also acts as a hydrogenation catalyst. NiO/CNTs (nickel oxide/carbon nanotubes) could be a potential cathode catalyst for oxygen reduction reaction (ORR) in microbial fuel cells (MFCs). It is blended with other high purity oxides and used in a variety of semiconductor applications such as thermistors and varistors.
Uses Nickel salts, porcelain painting, fuel cell electrodes.
Preparation Nickel oxide is prepared by heating pure nickel powder with oxygen at a temperature above 400°C. In some commercial processes, green nickel oxide is made by heating a mixture of nickel powder and water in air at 1,000°C. Adding some nickel oxide to the above mixture enhances the rate of reaction. An alternative method of preparation of the green oxide involves thermal decomposition of an oxo acid salt of nickel at elevated temperatures. Thus, nickel nitrate, nickel sulfate or, more conveniently, nickel carbonate when heated at 1,000°C, yields the green oxide. The black oxide, on the other hand, is produced at a lower temperature from incomplete calcination of the carbonate or nitrate salt at 600°C. The oxygen content of the black form is slight-ly greater than its green counterpart.
Reactions Nickel(II) oxide is insoluble in water but soluble in acids as long as it has not been ignited at a high temperature (under these latter conditions it is converted into grey-black octahedra having a metallic lustre). It reacts reversibly with hydrogen, the reaction NiO+H2 ? Ni+H20 proceeding from left to right at relatively low temperatures in a stream of hydrogen.
General Description Nickel(II) oxide (NiO) is a metal oxide based nanomaterial with a good semiconducting property. Nanosized nickel oxide can be found in a variety of morphologies which include nanoflowers, spheres, wires, and tubes. It exhibits high performance in applications which require charge transfer and charge transport based processes. It can be prepared by a variety of physical and thermal methods such as sol-gel, hydrothermal and solvothermal techniques.
Hazard Confirmed carcinogen.
Flammability and Explosibility Non flammable
Safety Profile Confirmed carcinogen with experimental carcinogenic and tumorigenic data. Poison by intratracheal, intravenous, and subcutaneous routes. Mutation data reported. Can react violently with fluorine, hydrogen peroxide, hydrogen sulfide, iodine, barium oxide + air. See also NICKEL COMPOUNDS.
Toxics Screening Level The Initial Risk Screening Level (IRSL) and Secondary Risk Screening Level (SRSL) for nickel and nickel compounds are 0.006 and 0.06 μg/m3 based on an annual averaging time.