Potassium amyl xanthate

Potassium amyl xanthate
Names
	IUPAC name potassium O-pentylcarbonodithioate
	Other names potassium pentylxanthogenate; potassium-O-pentyl dithiocarbonate
Identifiers
CAS Number	2720-73-2 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL2380741;
ChemSpider	16668 ;
EC Number	220-329-5;
PubChem CID	493949;
	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 free flowing powder
Density	1.073 g/cm
Solubility in water	Soluble
Hazards
GHS pictograms
GHS Signal word	Warning
GHS hazard statements	H228, H302, H312, H315, H319, H335, H411
GHS precautionary statements	P210, P240, P241, P261, P264, P270, P271, P273, P280, P301+312, P302+352, P304+340, P305+351+338, P312, P321, P322, P330, P332+313, P337+313, P362, P363, P370+378, P391, P403+233, P405
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

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

Production and properties

Potassium amyl xanthate is prepared by reacting 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 that is relatively stable between pH 8 and 13 with a maximum of stability at pH 10.[2]

Safety

The LD₅₀ is 480 mg/kg (oral, rats) for potassium pentylxanthate.[3]

It is a biodegradable compound.

References

Charles C. Price and Gardner W. Stacy (1948). "p-nitrophenyl) sulfide". Organic Syntheses. 28: 82.; Collective Volume, 3, p. 667
J. Dyer, L. H. Phifer, Macromolecules 2 (1969) 111. R. J. Millican, C. K. Sauers, J. Org. Chem. 44 (1979) 1964.
Kathrin-Maria Roy "Xanthates" in Ullmann's Encyclopedia of Industrial Chemistry 2005, Wiley-VCH, Weinheim.

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[1] Charles C. Price and Gardner W. Stacy (1948). "p-nitrophenyl) sulfide". Organic Syntheses. 28: 82.; Collective Volume, 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.

[Ullmann-3] Kathrin-Maria Roy "Xanthates" in Ullmann's Encyclopedia of Industrial Chemistry 2005, Wiley-VCH, Weinheim.