Xanthate - Wikipedia
WEBA xanthate is a salt or ester of a xanthic acid. The formula of the salt of xanthic acid is [R−O−CS2]−M+ (where R is organyl group and M is usually Na or K ). [1] . Xanthate also refers to the anion [R−O−CS2]−.
Xanthate | Organic Chemistry, Reactions, Salts | Britannica
WEBXanthate, any of a class of organic salts formed by treatment of an alcohol with carbon disulfide in the presence of an alkali. The term is derived from the Greek word xanthos, for “yellow,” in reference to the compound potassium ethyl xanthate (C2H5OCS2K), which gives a yellow precipitate when.
II. Xanthates - Chemistry LibreTexts
WEBSep 14, 2022 · Anomeric xanthates, compounds that provide a synthetic challenge due to their instability, can be produced by phase-transfer reaction (eq 1). 9 This reaction also demonstrates the potential of the phase-transfer procedure in preparing xanthates containing base-labile groups.
Xanthate - an overview | ScienceDirect Topics
WEBXanthates are used in the flotation process as collectors in the separation of refractory gold ores – as well as sulfidic metal ores in general since 1925. Common xanthate products are sodium ethyl xanthate, sodium isopropyl xanthate, sodium isobutyl xanthate, and potassium amyl xanthate ( Fig. 14.2 ) ( Bach et al., 2016 ; Commonwealth of ...
Sodium ethyl xanthate - Wikipedia
WEBSodium ethyl xanthate ( SEX) [3] is an organosulfur compound with the chemical formula CH3CH2OCS2Na. It is a pale yellow powder, which is usually obtained as the dihydrate. Sodium ethyl xanthate is used in the mining industry as a flotation agent. [4] . A closely related potassium ethyl xanthate (KEX) is obtained as the anhydrous salt. Production.
Xanthate | SpringerLink
WEBJun 14, 2023 · According to the metal element connected to the thioether group, xanthates are classified into sodium xanthate and potassium xanthate. Among the xanthates used in industry, when the number of carbon atom in R is less than four, they are called low-grade xanthate, and when the number is four or more, they are called higher xanthate.
Xanthate - an overview | ScienceDirect Topics
WEBO-Alkyl xanthates have been widely exploited for RAFT polymerization of VAc, NVP, and related vinyl monomers (such as NVC and N-vinylindole (NVI)) where the propagating radical is a relatively poor homolytic leaving group. They are generally less effective (have low transfer coefficients) in polymerization of styrenic and acrylic monomers and ...
On the Trail of Xanthates: Some New Chemistry from an Old Functional ...
WEBApr 18, 1997 · PDF. Tools. Share. Graphical Abstract. Known for nearly two centuries, yet hardly researched! The rich chemistry of xanthates leaves much to be discovered. Xanthates are cheap precursors to a great variety of radicals that can be efficiently captured in reactions free of heavy metals.
Xanthate - an overview | ScienceDirect Topics
WEBCellulose Xanthate. Cellulose xanthate or viscose is an intermediate in the production of viscose rayon, used in the manufacture of textile fibers and cellophane wrapping. The manufacture of viscose starts by swelling the cellulose with sodium hydroxide.
Xanthates: Metabolism by Flavoprotein-Containing …
WEBApr 10, 2018 · Xanthates are salts of different derivatives of dithiocarbonic acid that have a large spectrum of biologic effects. These include antiviral, anticancer, and chelating effects, as well as the inhibition of several enzymes of importance in intercellular signaling processes ( Adibhatla et al., 2012 ).
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