Potassium amyl xanthate
Appearance
Names | |
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IUPAC name
potassium O-pentylcarbonodithioate
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Other names
potassium pentylxanthogenate
potassium-O-pentyl dithiocarbonate | |
Identifiers | |
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ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.018.481 |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
C6H11KOS2 | |
Molar mass | 202.37 g·mol−1 |
Appearance | Pale yellow or yellow free flowing powder |
Density | 1.073 g/cm |
Soluble | |
Hazards | |
GHS labelling: | |
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H228, H302, H312, H315, H319, H335, H411 | |
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).
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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; 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.
- ^ Kathrin-Maria Roy "Xanthates" in Ullmann's Encyclopedia of Industrial Chemistry 2005, Wiley-VCH, Weinheim.