xanthate


xanthate
xanthation, n.
/zan"thayt/, n. Chem.
a salt or ester of xanthic acid.
[1825-35; XANTH(IC ACID) + -ATE2]

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      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 combined with copper sulfate. The most important group of xanthates are the sodium salts produced from cellulose; (cellulose) these materials are processed to form the synthetic fibre rayon or the transparent film cellophane, then reconverted to cellulose. The xanthates of some low-molecular-weight alcohols are used as flotation agents for the concentration of ores.

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Universalium. 2010.

Look at other dictionaries:

  • Xanthate — Xan thate, n. [See {Xanthic}.] (Chem.) A salt of xanthic; a xanthogenate. [1913 Webster] …   The Collaborative International Dictionary of English

  • Xanthate — Xanthate,   Chemie: die Xanthogenate …   Universal-Lexikon

  • xanthate — [zan′thāt΄] n. a salt or ester of xanthic acid …   English World dictionary

  • Xanthate — Xanthates are the salts and esters of a xanthic acid, ROC(=S)SH or O esters of dithiocarbonic acid where R is any organic residue. The ethyl ester CH3CH2OC(=S)SH is also the parent compound xanthic acid. Many xanthates have a yellow colour, which …   Wikipedia

  • xanthate — ● xanthogénate ou xanthate nom masculin Sel ou ester de l acide xanthogénique. xanthate [gzɑ̃tat] n. m. ÉTYM. 1846; de xanth , et ate. ❖ ♦ Chim. Sel de l acide xanthique …   Encyclopédie Universelle

  • xanthate — alkoksiditioformiatas statusas T sritis chemija formulė ROC(=S)S(M,R) atitikmenys: angl. alkoxydithioformiate; xanthate; xanthogenate rus. алкоксидитиоформиат; ксантат; ксантогенат ryšiai: sinonimas – alkoksiditiometanoatas …   Chemijos terminų aiškinamasis žodynas

  • xanthate — noun Date: 1831 a salt or ester of any of various thio acids and especially C3H6OS2 …   New Collegiate Dictionary

  • xanthate — noun /ˈzænθeɪt/ Any salt or ester of xanthic acid …   Wiktionary

  • xanthate — xan·thate zan .thāt n a salt or ester of any of various thio acids and esp. C3H6OS2 …   Medical dictionary

  • xanthate — xan·thate …   English syllables