1) Salt 1) Viscose 
Xanthate usually refers to a salt with the formula ROCS2-M+ (R = alkyl; M+ = Na+, K+). The name xanthates is derived from Greek ξανθός ksantʰós, meaning `yellowish, golden”, and indeed most xanthate salts are yellow. These organosulfur compounds are important in two areas, the production of cellophane and related polymers from cellulos.....
• (n.) A salt of xanthic; a xanthogenate.
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 ...
a salt or ester of xanthic acid.
Xan'thate noun [ See Xanthic .] (Chemistry) A salt of xanthic; a xanthogenate. 
[n] - a salt or ester of xanthic acid
noun a salt or ester of xanthic acid