Potassium amyl xanthate
Appearance
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Names | |
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Preferred IUPAC name
Potassium O-pentyl carbonodithioate | |
Other names
potassium pentylxanthogenate
potassium-O-pentyl dithiocarbonate | |
Identifiers | |
3D model (JSmol)
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ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.018.481 |
EC Number |
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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 powder |
Density | 1.073 g/cm3 |
Soluble | |
Hazards | |
GHS labelling: | |
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Warning | |
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 (/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.