NICKEL SULFIDE Chemical Properties

Melting point:

797°C

Density 

5,3 g/cm³

solubility 

insoluble in H2O

form 

Powder

color 

black

Specific Gravity

5.3～5.65

Water Solubility 

0.00036g/100mL H2O (18°C) [CRC10]

EPA Substance Registry System

Nickel sulfide (NiS) (16812-54-7)

Safety Information

Hazard Codes 

T,N

Risk Statements 

43-49-50/53

Safety Statements 

45-53-61-60

RIDADR 

2811

MSDS

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NICKEL SULFIDE Usage And Synthesis

Chemical Properties

black powder(s); trig, yellow metallic luster; enthalpy of fusion 30.10 kJ/mol; can be formed by fusing Ni powder(s) and molten sulfur; other sulfides include Ni2S, 12137-08-5, Ni3S2, 12035-72-2 (heazlewoodite), NiS2, 12035-51-7, and Ni3S, 12137-12-1 (polydymite) [KIR81] [STR93] [CRC10] [JAN85]

Preparation

The black nickel sulphide precipitated from nickel(II) salt solutions by ammonium sulphide in neutral but not strongly acid solution is the so-called α-NiS ; it consists largely of amorphous Ni(SH,OH)2 when first precipitated. At low pH this crystallizes to give mainly the rhombohedral γ-NiS, while at higher pH the hexagonal β-NiS(Ni_1-XS) crystallizes.

Flammability and Explosibility

Non flammable

Safety Profile

Confirmed carcinogen with experimental carcinogenic and neoplastigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of SOx. See also NICKEL COMPOUNDS and SULFIDES.

NICKEL SULFIDE(16812-54-7)Related Product Information

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