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| CAS No.: | 12035-71-1 |
|---|---|
| Name: | Heazlewoodite |
| Molecular Structure: | |
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|
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| Formula: | Ni3S2 |
| Molecular Weight: | 240.25 |
| Safety: | Confirmed carcinogen. When heated to decomposition it emits toxic vapors of SOx and Ni. |
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Chemistry
IUPAC Name: Nickel sulfide
Molecular Formula: Ni3S2
Molecular Weight: 240.25g/mol
Density: 5.8 g/mL at 25 °C(lit.)
EINECS: 234-829-6
Transport information: UN 3077 9/PG 3
Properties: opaque trigonal - trapezhedral crystal with light bronze streak
Color: pale bronze
Freely Rotating Bonds: 0
Polar Surface Area: 32.09 Å2
Air and Water Reactions: Nickel sulfide -150 MESH 99.7% is sensitive to prolonged exposure to air. Insoluble in water.
The Cas Register Number of Heazlewoodite is 12035-71-1.The chemical synonyms of Heazlewoodite (CAS NO.12035-71-1) are Nickel sulfide -150 mesh 99.7% ; Alpha-nickelsulfide(3:2)crystalline ; Heazlewoodite[qr] ; Nickelsesquisulfide ; Nickelsubsulfide ; Nickelsubsulphide The molecular structure of Heazlewoodite (CAS NO.12035-71-1) is.png)
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History
It is known from few ultramafic intrusions within terrestrial rocks. The Honeymoon Well ultramafic intrusive, Western Australia is known to contain heazlewoodite-millerite sulfide assemblages within serpentinized olivine adcumulate dunite, formed from the metamorphic process.
Uses
Heazlewoodite (CAS NO.12035-71-1) can be used in producing of Sulphur and Nickel .
Production
It is formed within terrestrial rocks by metamorphism of peridotite and dunite via a process of nucleation and only formed via metamorphic exsolution of sulfur from the lattice of metamorphic olivine.
Consensus Reports
IARC Cancer Review: Animal Sufficient Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 49 , 1990,p. 257.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) .
Safety Profile
Confirmed carcinogen. When heated to decomposition it emits toxic vapors of SOx and Ni.
Hazard Codes: 
T,
N
Risk Statements: 49-43-51/53
R49: May cause cancer by inhalation.
R43: May cause sensitization by skin contact.
R51/53: Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements: 53-45-61
S53: Avoid exposure - obtain special instructions before use.
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S61: Avoid release to the environment. Refer to special instructions / safety data sheets.
Specification
Heazlewoodite (CAS NO.12035-71-1) is a rare sulfur-poor nickel sulfide mineral found in serpentinitized dunite.It has a hardness of 4, a specific gravity of 5.82.