Trinickel disulfide

Crystal structure
	__ Ni __ S
General
Surname	Trinickel disulfide
other names	Nickel sulfide; Nickel subsulfide; Heazlewoodite;
Ratio formula	Ni 3 S 2
Brief description	gray solid
External identifiers / databases
ECHA InfoCard	100,031,650
PubChem	121492971
Wikidata	Q13896593
properties
Molar mass	240.20 g mol −1
Physical state	firmly
density	5.87 g cm −3
Melting point	787 ° C
solubility	practically insoluble in water
safety instructions
H and P phrases	H: 350i-317-341-372-410
	P: 201-273-280-308 + 313-501
Toxicological data	> 5000 mg kg −1 ( LD 50 , rat , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Trinickel disulphide is a chemical compound from the group of inorganic compounds of nickel from the group of disulphides .

Occurrence

Trinickel disulfide occurs naturally in the form of the mineral Heazlewoodite .

Extraction and presentation

Trinickel disulphide can be obtained by reacting nickel (II) sulphide with oxygen .

{\ displaystyle \ mathrm {3 \ NiS + O_ {2} \ longrightarrow Ni_ {3} S_ {2} + SO_ {2}}}

It can also be obtained by reacting nickel with sulfur dioxide or nickel sulfate .

{\ displaystyle \ mathrm {7 \ Ni + SO_ {2} \ longrightarrow Ni_ {3} S_ {2} +4 \ NiO}}

{\ displaystyle \ mathrm {9 \ NiS + 2 \ NiSO_ {4} \ longrightarrow Ni_ {3} S_ {2} +8 \ NiO}}

properties

Trinickel disulfide is a gray, non-flammable solid that is practically insoluble in water. It decomposes when heated. It has a trigonal crystal system with the space group R 32 (space group no. 155) . From 556 ° C it is available in a high-temperature modification with a cubic crystal structure. Template: room group / 155

use

Trinickel disulfide can be used as a catalyst.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry on trinickel disulfide in the GESTIS substance database of the IFA , accessed on August 16, 2019(JavaScript required) .
↑ Entry on Trinickel disulphide in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
^ YK Rao: Stoichiometry and Thermodynamics of Metallurgical Processes . CUP Archive, 1985, ISBN 0-521-25856-1 , pp. 635 ( limited preview in Google Book search).
^ Myer Kutz: Handbook of Environmental Degradation of Materials . William Andrew, 2013, ISBN 0-08-094707-7 , pp. 139 ( limited preview in Google Book search).
↑ Roger Blachnik (Ed.): Paperback for chemists and physicists . Volume III: Elements, Inorganic Compounds and Materials, Minerals . founded by Jean d'Ans, Ellen Lax. 4th, revised and revised edition. Springer, Berlin 1998, ISBN 3-540-60035-3 , pp. 644 ( limited preview in Google Book search).
^ Helmut Schrätze, Karl Ludwig Weiner: Mineralogie . Walter de Gruyter, 1981, ISBN 3-11-006823-0 , p. 141 ( limited preview in Google Book search).
^ Hans-Dieter Belitz, Werner Grosch, Peter Schieberle: Textbook of food chemistry - Hans-Dieter Belitz, Werner Grosch, Peter Schieberle . Springer DE, 2001, ISBN 3-540-41096-1 , pp. 643 ( limited preview in Google Book search).

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry on trinickel disulfide in the GESTIS substance database of the IFA , accessed on August 16, 2019(JavaScript required) .

[CLP_100.031.650-2] Entry on Trinickel disulphide in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .

[Y._K._Rao-3] YK Rao: Stoichiometry and Thermodynamics of Metallurgical Processes . CUP Archive, 1985, ISBN 0-521-25856-1 , pp. 635 ( limited preview in Google Book search).

[Myer_Kutz-4] Myer Kutz: Handbook of Environmental Degradation of Materials . William Andrew, 2013, ISBN 0-08-094707-7 , pp. 139 ( limited preview in Google Book search).

[Jean_d'._Ans,_Ellen_Lax-5] Roger Blachnik (Ed.): Paperback for chemists and physicists . Volume III: Elements, Inorganic Compounds and Materials, Minerals . founded by Jean d'Ans, Ellen Lax. 4th, revised and revised edition. Springer, Berlin 1998, ISBN 3-540-60035-3 , pp. 644 ( limited preview in Google Book search).

[Helmut_Schröcke,_Karl_Ludwig_Weiner-6] Helmut Schrätze, Karl Ludwig Weiner: Mineralogie . Walter de Gruyter, 1981, ISBN 3-11-006823-0 , p. 141 ( limited preview in Google Book search).

[Hans-Dieter_Belitz,_Werner_Grosch,_Peter_Schieberle-7] Hans-Dieter Belitz, Werner Grosch, Peter Schieberle: Textbook of food chemistry - Hans-Dieter Belitz, Werner Grosch, Peter Schieberle . Springer DE, 2001, ISBN 3-540-41096-1 , pp. 643 ( limited preview in Google Book search).