- 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.
- Other
names for xanthates include xanthogenates, carbondithioates,
dithiocarbonates and sodium or potassium salts of xanthanic (or
dithiocarbonic) acids.
- Four types
of xanthates (ethyl, butyl, propyl and amyl) can be produced in
various combinations with sodium and potassium, which are
stabilizers in the chemical formula.
- Xanthates
can be produced from carbon disulfide, and are used as flotation
agents in mineral processing.
- Xanthate
precipitation is a relatively new technology compared to other
precipitation methods. Xanthates are sulfonated organic
compounds. The xanthate acts as an ion exchange material, where
heavy metals ions are replaced with sodium and magnesium.
- Xanthates
are commonly used to manufacture cellulose film (cellophane) and
rayon, but in Australia they are exclusively used as a collector
for the extraction of sulfide minerals.
- Xanthate
is the common name for chemical reagents used in the flotation
of base and precious metals, which is the standard method for
separating valuable minerals, such as gold, copper, lead or zinc
minerals, from non-valuable minerals, such as limestone or
quartz (gangue).
- Xanthates
are also used as defoliants, herbicides, insecticides and
fungicides in agricultural production and as additives in the
curing and vulcanization of rubber and as high-pressure
lubricant additives.
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