NICKEL CYANIDE

NICKEL CYANIDE Basic information
Product Name:NICKEL CYANIDE
Synonyms:dicyanonickel;nickel(ii)cyanide;nickelcyanide(ni(cn)2);nickeldicyanide;NICKEL CYANIDE;NICKEL CYANIDE TETRAHYDRATE;Dicyanonickel(II);Nickel(II)dicyanide
CAS:557-19-7
MF:C2N2Ni
MW:110.73
EINECS:209-160-8
Product Categories:
Mol File:557-19-7.mol
NICKEL CYANIDE Structure
NICKEL CYANIDE Chemical Properties
Melting point 200°C -4H₂O
density 2.393 g/cm3
form solid
Merck 14,6506
Stability:Stable, but reacts violently with magnesium.
EPA Substance Registry SystemNickel(II) cyanide (557-19-7)
Safety Information
RIDADR UN1653
HazardClass 6.1
PackingGroup II
HS Code 28371990
Hazardous Substances Data557-19-7(Hazardous Substances Data)
MSDS Information
ProviderLanguage
ALFA English
NICKEL CYANIDE Usage And Synthesis
Chemical Propertiesgreen powder
Chemical PropertiesNickel cyanide is a yellowish-brown plates or powder that may change to a green color by absorbing moisture. Odor is a weak almond odor like cyanide.
Physical propertiesThe tetrahydrate, Ni(CN)2?4H2O constitutes apple green plates or powder; loses water of crystallization on heating at 200°C; decomposes on further heating; insoluble in water; slightly soluble in dilute acids; soluble in potassium cyanide solution and in ammonia, caustic soda, caustic potash and other bases.
UsesMetallurgy, electroplating.
PreparationNickel cyanide is prepared by treating a soluble nickel salt, such as nickel chloride or nickel sulfate, with potassium cyanide solution: Ni2+ + 2CNˉ → Ni(CN)2
The product is a tetrahydrate, Ni(CN)2?4H2O, which on heating at 200°C yields yellow-brown anhydrous salt, Ni(CN)2.
ReactionsThe most interesting reaction of nickel(II) cyanide is the formation of clathrate compounds in the presence of ammonia. When a solution of Ni(CN)2 in aqueous ammonia is shaken with benzene, a pale violet precipitate of the benzene clathrate Ni(CN)2?NH3?C6H6 is obtained. In this compound the Ni and CN groups form layers with ammonia molecules bonded above and below the planes of the layers on alternate nickel atoms. Thus half the nickel atoms are octahedrally surrounded by nitrogen (Ni-N=2.15 ?, N1-NH3 = 2.06 à) and half are planar 4-coordinated by carbon (Ni-C=1.76?). The benzene molecules occupy the holes (cages) formed between the layers. The average magnetic moment per nickel atom is 2.2 BM, and it has thus been established that the 4- coordinate nickel atoms are diamagnetic while the 6-coordinate atoms are paramagnetic with two unpaired electron spins.
General DescriptionNICKEL CYANIDE is an apple-green powder or a green crystalline solid. Insoluble in water. Toxic by inhalation and by ingestion. Carcinogenic. Produces toxic oxides of nitrogen in fires.
Air & Water ReactionsInsoluble in water.
Reactivity ProfileNICKEL CYANIDE is thermally unstable and easily oxidized. Weakly basic. Liberates flammable and lethally poisonous hydrogen cyanide gas on contact with acids or acid fumes. Undergoes violent reactions with fluorine, hypochlorites, nitric acid, nitrates, nitrites. Undergoes an explosive reaction if melted with nitrites or chlorates (at about 450°C). Emits highly toxic cyanide fumes when heated to decomposition. [Lewis, 3rd ed., 1993, p. 360, 912]. Undergoes an incandescent reaction if heated with magnesium [Mellor, 1940, vol. 4, p. 271].
HazardHighly toxic.
Health HazardDUST: POISONOUS IF INHALED. Irritating to eyes, nose and throat. SOLID: POISONOUS IF SWALLOWED. Irritating to skin and eyes.
Fire HazardNot flammable.
Safety ProfileConfirmed human carcinogen. A poison. Incandescent reaction when heated with magnesium. When heated to decomposition it emits very toxic fumes of CN-. See also CYANIDE and NICI(EL COMPOUNDS.
Potential ExposureNickel cyanide is used in metallurgy, electroplating and making other chemicals.
ShippingUN1653 Nickel cyanide, Hazard Class: 6.1; Labels: 6.1-Poisonous materials. and equipped in OSHA 1910.156. The only respirators recommended for fire fighting are SCBAs that have full facepieces and are operated in a pressure-demand or other positive-pressure mode.
IncompatibilitiesNnickel cyanide is thermally unstable and easily oxidized. Weakly basic. Liberates flammable and lethally poisonous hydrogen cyanide gas on contact with acids or acid fumes. Undergoes violent reactions with fluorine, hypochlorites, nitric acid, nitrates, nitrites. Undergoes an explosive reaction if melted with nitrites or chlorates (at about 450 C). Violent reaction with magnesium. Keep away from acids, active metals, heat, or CO2; contact can cause release of toxic cyanide gas.
Waste DisposalConsult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal.
NICKEL CYANIDE Preparation Products And Raw materials
Preparation Products1,3,5,7-Cyclooctatetraene
Silver cyanide Potassium nickel cyanide nickel potassium cyanide NICKEL CALCIUM CYANIDE POTASSIUM NICKEL CYANIDE SPECIAL PRODUCTION(MINIMUM QUANTITY 100 KG) NICKEL CYANIDE POTASSIUM NICKEL CYANIDE

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