Nickel (II) acetate

Structural formula
General
Surname	Nickel (II) acetate
other names	Nickel acetate
Molecular formula	C 4 H 6 NiO 4
Brief description	greenish crystals with a faint characteristic odor
External identifiers / databases
EC number	206-761-7
ECHA InfoCard	100.006.147
PubChem	9756
ChemSpider	9373
Wikidata	Q899422
properties
Molar mass	176.78 g mol −1 (pure substance); 248.86 g mol −1 (tetrahydrate);
Physical state	firmly
density	1.768 g cm −3
Melting point	decomposition
solubility	easily in water (177 g l −1 at 20 ° C, tetrahydrate); soluble in ethanol;
safety instructions
H and P phrases	H: 302 + 332-317-334-341-350i-360-372-410
	P: 201-273-280-301 + 312 + 330-302 + 352-308 + 313
Toxicological data	350 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 .

Nickel (II) acetate is the nickel salt of acetic acid and belongs to the group of acetates with the constitutional formula Ni (CH ₃ COO) ₂ .

Extraction and presentation

Nickel (II) acetate can be prepared by reaction of carbonate Nickel (II) with acetic acid are produced.

{\ displaystyle \ mathrm {NiCO_ {3} +2 \ CH_ {3} COOH \ longrightarrow Ni (CH_ {3} COO) _ {2} + H_ {2} O + CO_ {2} \ uparrow}}

properties

Nickel (II) acetate usually occurs as a tetrahydrate. The crystal water content was first determined in 1878 by H. Stallo. Nickel (II) acetate tetrahydrate crystallizes in the monoclinic crystal system in the space group P 2 ₁ / c (space group no. 14) with the lattice parameters a = 476.4 pm , b = 1177.1 pm, c = 842.5 pm and β = 93.6 °. In the unit cell contains two formula units . Template: room group / 14

Nickel (II) acetate tetrahydrate begins to give off its water of crystallization at approx. 80 ° C. Further heating results in an anhydrous, basic nickel (II) acetate with the stoichiometric composition 0.86 Ni (CH ₃ COO) ₂ · 0.14 Ni (OH) ₂ . The decomposition begins at 250 ° C, nickel carbide and nickel (II) carbonate are formed as intermediate products . The end products of the decomposition are nickel (II) oxide and elemental nickel.

use

Nickel (II) acetate is used for pickling of textiles and coatings during anodizing used ( "Seal salt").

safety

Nickel (II) acetate is classified as a carcinogen.

Individual evidence

↑ ^a ^b ^c ^d data sheet nickel (II) acetate from AlfaAesar, accessed on February 25, 2011 ( PDF )(JavaScript required) .
↑ ^a ^b ^c Entry in Nickel acetate at chemicalland21.com
↑ ^a ^b ^c Entry on nickel (II) acetate in the GESTIS substance database of the IFA , accessed on January 23, 2020(JavaScript required) .
↑ Entry on Nickel di (acetate) in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
^ ^A ^b F. W. Clarke: "Some determinations of specific weights", in: Reports of the German Chemical Society , 1878 , 11 (2), pp. 1504–1507; doi: 10.1002 / cber.18780110261 ; Full text at gallica .
^ TC Downie, W. Harrison, ES Raper, MA Hepworth: "A Three-Dimensional Study of the Crystal Structure of Nickel Acetate Tetrahydrate", in: Acta Crystallographica , 1971 , B27 , pp. 706-712; doi: 10.1107 / S0567740871002802 .
↑ JN Van Niekerk, FRL Schoening: "The crystal structures of nickel acetate, Ni (CH ₃ COO) ₂ · 4H ₂ O, and cobalt acetate, Co (CH ₃ COO) ₂ · 4H ₂ O", in: Acta Crystallographica , 1953 , 6 (7), pp. 609-612; doi: 10.1107 / S0365110X5300171X .
↑ ^a ^b M. A. Mohamed, SA Halawy, MM Ebrahim: "Non-isothermal decomposition of nickel acetate tetrahydrate", in: Journal of Analytical and Applied Pyrolysis , 1993 , 27 (2), pp. 109-110. doi: 10.1016 / 0165-2370 (93) 80002-H .
↑ ^a ^b M. AA Elmasry, A. Gaber, EMH Khater: "Thermal decomposition of Ni (II) and Fe (III) acetates and their mixture", in: Journal of Thermal Analysis and Calorimetry , 1996 , 47 , p. 757 -763; doi: 10.1007 / BF01981811 .
^ ^A ^b J. C. De Jesus, I. Gonzalez, A. Quevedo, T. Puerta: "Thermal decomposition of nickel acetate tetrahydrate: an integrated study by TGA, QMS and XPS techniques", in: Journal of Molecular Catalysis A: Chemical , 2005 , 228 (1-2), pp. 283-291; doi: 10.1016 / j.molcata.2004.09.065 .
↑ ^a ^b G. AM Hussein, AKH Nohman, KMA Attyia: “Characterization of the decomposition course of nickel acetate tetrahydrate in air”, in: Journal of Thermal Analysis and Calorimetry , 1994 , 42 , pp. 1155-1165; doi: 10.1007 / BF02546925 .

[Alfa-1] ta sheet nickel (II) acetate from AlfaAesar, accessed on February 25, 2011 ( PDF )(JavaScript required) .

[CL21-2] Entry in Nickel acetate at chemicalland21.com

[GESTIS-3] Entry on nickel (II) acetate in the GESTIS substance database of the IFA , accessed on January 23, 2020(JavaScript required) .

[CLP_100.006.147-4] Entry on Nickel di (acetate) in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .

[Clarke-5] A ^b F. W. Clarke: "Some determinations of specific weights", in: Reports of the German Chemical Society , 1878 , 11 (2), pp. 1504–1507; doi: 10.1002 / cber.18780110261 ; Full text at gallica .

[Downie-6] TC Downie, W. Harrison, ES Raper, MA Hepworth: "A Three-Dimensional Study of the Crystal Structure of Nickel Acetate Tetrahydrate", in: Acta Crystallographica , 1971 , B27 , pp. 706-712; doi: 10.1107 / S0567740871002802 .

[Niekerk-7] JN Van Niekerk, FRL Schoening: "The crystal structures of nickel acetate, Ni (CH ₃ COO) ₂ · 4H ₂ O, and cobalt acetate, Co (CH ₃ COO) ₂ · 4H ₂ O", in: Acta Crystallographica , 1953 , 6 (7), pp. 609-612; doi: 10.1107 / S0365110X5300171X .

[Mohamed-8] M. A. Mohamed, SA Halawy, MM Ebrahim: "Non-isothermal decomposition of nickel acetate tetrahydrate", in: Journal of Analytical and Applied Pyrolysis , 1993 , 27 (2), pp. 109-110. doi: 10.1016 / 0165-2370 (93) 80002-H .

[Elmasry-9] M. AA Elmasry, A. Gaber, EMH Khater: "Thermal decomposition of Ni (II) and Fe (III) acetates and their mixture", in: Journal of Thermal Analysis and Calorimetry , 1996 , 47 , p. 757 -763; doi: 10.1007 / BF01981811 .

[DeJesus-10] A ^b J. C. De Jesus, I. Gonzalez, A. Quevedo, T. Puerta: "Thermal decomposition of nickel acetate tetrahydrate: an integrated study by TGA, QMS and XPS techniques", in: Journal of Molecular Catalysis A: Chemical , 2005 , 228 (1-2), pp. 283-291; doi: 10.1016 / j.molcata.2004.09.065 .

[Hussein-11] G. AM Hussein, AKH Nohman, KMA Attyia: “Characterization of the decomposition course of nickel acetate tetrahydrate in air”, in: Journal of Thermal Analysis and Calorimetry , 1994 , 42 , pp. 1155-1165; doi: 10.1007 / BF02546925 .