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. ..)

You have no rights to post comments

Related Articles

Mineral ■■■■■■■■■■
Mineral can have several meanings and refers to one of the following options : 1. A naturally occurring . . . Read More
Sodium ■■■■■■■■■■
Sodium is a chemical element with the symbol Na (from Latin: natrium) and atomic number 11. It is a soft, . . . Read More
Chloride ■■■■■■■■■■
Chloride: The chloride ion is formed when the element chlorine (a halogen) gains an electron to form . . . Read More
Bagasse ■■■■■■■■■
Bagasse refers to the fibrous material remaining after pressing the sugarcane to remove the sugar. Bagasse . . . Read More
Phosphate ■■■■■■■■■
In chemistry, a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. . . . Read More
Alkaline ■■■■■■■■■
An Alkaline is a solution having a pH of more than 7. Alkalinity is the name given to the quantitative . . . Read More
Concentration ■■■■■■■■
In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. . . . Read More
Lithium ■■■■■■■■
Lithium is a chemical element with symbol Li and atomic number 3. It is a soft, silver-white metal belonging . . . Read More
Alkaline substance ■■■■■■■■
Alkaline substance refers to chemical compounds in which the basic hydroxide (OH-) ion is united with . . . Read More
CAS ■■■■■■■■
In the industrial/industry context, CAS stands for Chemical Abstracts Service, a division of the American . . . Read More