Xanthates are formed by combining alcohol with carbon disulfide in the presence of an alkali metal - namely lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), or francium (Fr).

The term is derived from the Greek word xanthos, for yellow. The most important group of xanthates are the sodium salts produced from cellulose.

These materials are processed to form rayon and cellophane. Some xanthates are used as flotation agents for the concentration of certain metal ores. Human and environmental health risks depend on the chemical xanthate in question.

Ref: 122296/2006-09-19

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 gives the compound its name derived from xanthous, meaning yellow. IUPAC does not recommend the use of this term.

Xanthates can be produced from carbon disulfide, and are used as flotation agents in mineral processing. They are intermediates in the Chugaev elimination. Xanthates are also used to control radical polymerisation under the RAFT process , also termed MADIX.

Ref: 86274/2006-09-13

Other Database Pages Exist for this Phrase:
Cellophane (Cellophane is a thin, flexible, transparent film ...)

Related Articles

Cellophane ■■■■■■■
Cellophane is a thin, flexible, transparent film formed from cellulose fibres. Cellophane is widely used . . . Read More
Alkaline substance ■■■■■■
Alkaline substance refers to chemical compounds in which the basic hydroxide (OH-) ion is united with . . . Read More
Chlorides ■■■■■■
Chlorides refer to an essential nutrient for plants and animals, including humans, but high concentrations . . . Read More
cellulose-flake insulation ■■■■■
cellulose-flake insulation: The Cellulose-flake insulation is an insulation made of cellulose-flakes; . . . Read More
Mineral ■■■■■
Mineral can have several meanings and refers to one of the following options :; - - 1. A naturally . . . Read More
Glycerine ■■■■■
Glycerine a term also known as glycerol which is described as a clear, colorless, viscous, sweet-tasting . . . Read More
Pollution prevention ■■■■■
Pollution prevention means the use of processes, practices, materials , products, substances or energy . . . Read More
Strong manufacturer-Sodium gluconate, Glucono-Delta-Lactone (GDL),calcium glucon
Strong manufacturer-Sodium gluconate, Glucono-Delta-Lactone (GDL),calcium gluconate, ferrous gluconate, . . . Read More