Potassium amyl xanthate

Potassium amyl xanthate
Names
	Preferred IUPAC name Potassium O-pentyl carbonodithioate
	Other names potassium pentylxanthogenate; potassium-O-pentyl dithiocarbonate
Identifiers
CAS Number	2720-73-2 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL2380741;
ChemSpider	16668 ;
ECHA InfoCard	100.018.481
EC Number	220-329-5;
PubChem CID	493949;
CompTox Dashboard (EPA)	DTXSID2062610 ;
	InChI InChI=1S/C6H12OS2.K/c1-2-3-4-5-7-6(8)9;/h2-5H2,1H3,(H,8,9);/q;+1/p-1 Key: YIBBMDDEXKBIAM-UHFFFAOYSA-M ; InChI=1S/C6H12OS2.K/c1-2-3-4-5-7-6(8)9;/h2-5H2,1H3,(H,8,9);/q;+1/p-1;
	SMILES CCCCCOC(=S)[S-].[K+];
Properties
Chemical formula	C6H11KOS2
Molar mass	202.37 g·mol−1
Appearance	Pale yellow or yellow powder
Density	1.073 g/cm3
Solubility in water	Soluble
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H228, H302, H312, H315, H319, H335, H411
Precautionary statements	P210, P240, P241, P261, P264, P270, P271, P273, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P370+P378, P391, P403+P233, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Potassium amyl xanthate (/pəˈtæsiəm ˌæmɪl ˈzænθeɪt/) is an organosulfur compound with the chemical formula CH₃(CH₂)₄OCS₂K. It is a pale yellow powder with a pungent odor that is soluble in water. It is widely used in the mining industry for the separation of ores using the flotation process.

Production and properties[edit]

As typical for xanthates, potassium amyl xanthate is prepared by reacting n-amyl alcohol with carbon disulfide and potassium hydroxide.^[1]

CH₃(CH₂)₄OH + CS₂ + KOH → CH₃(CH₂)₄OCS₂K + H₂O

Potassium amyl xanthate is a pale yellow powder. Its solutions are relatively stable between pH 8 and 13 with a maximum of stability at pH 10.^[2]

Related compounds[edit]

Sodium amyl xanthate is used in the separation of nickel and copper from their ores.^[3]

Safety[edit]

The LD₅₀ is 90-148 mg/kg (oral, rat). ^[4]

It is a biodegradable compound.

References[edit]

^ Charles C. Price and Gardner W. Stacy (1948). "p-nitrophenyl sulfide". Organic Syntheses. 28: 82; Collected Volumes, vol. 3, p. 667.
^ J. Dyer, L. H. Phifer, Macromolecules 2 (1969) 111. R. J. Millican, C. K. Sauers, J. Org. Chem. 44 (1979) 1964.
^ Kerfoot, Derek G. E. (2005). "Nickel". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a17_157. ISBN 978-3527306732.
^ Kathrin-Maria Roy "Xanthates" in Ullmann's Encyclopedia of Industrial Chemistry 2005, Wiley-VCH, Weinheim.

[1] Charles C. Price and Gardner W. Stacy (1948). "p-nitrophenyl sulfide". Organic Syntheses. 28: 82; Collected Volumes, vol. 3, p. 667.

[2] J. Dyer, L. H. Phifer, Macromolecules 2 (1969) 111. R. J. Millican, C. K. Sauers, J. Org. Chem. 44 (1979) 1964.

[3] Kerfoot, Derek G. E. (2005). "Nickel". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a17_157. ISBN 978-3527306732.

[Ullmann-4] Kathrin-Maria Roy "Xanthates" in Ullmann's Encyclopedia of Industrial Chemistry 2005, Wiley-VCH, Weinheim.

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