What does xanthate mean?
A xanthate is a chemical compound that is a salt or ester of xanthic acid. The term is especially common in industrial chemistry and mineral processing, where compounds such as sodium xanthate and potassium xanthate act as collectors during flotation. These collectors cause selected mineral particles, particularly many metal sulfides, to become more hydrophobic so that they can be separated from less desirable material using water and air. Xanthates also occur as organic compounds in laboratory and industrial chemistry, including xanthate esters with distinctive sulfur-containing functional groups. The word is therefore associated primarily with specialized chemical and metallurgical processes rather than general language. Its name ultimately derives from the Greek xanthos, meaning “yellow,” reflecting the historical association of xanthic acid and xanthates with yellow coloration. Although less familiar than terms such as sulfate or carbonate, xanthate is important in ore beneficiation and continues to be studied in areas including solvent extraction and materials chemistry.
nounA xanthate is a salt or ester of xanthic acid. In industrial chemistry, the term most often refers to metal salts such as sodium or potassium xanthate.
- A salt or ester of xanthic acid, especially a metal salt used in mineral flotation.
"Sodium xanthate is used as a collector during mineral flotation to separate valuable sulfide ores from waste rock."
"The flotation plant added sodium xanthate to make the copper sulfide particles more hydrophobic."
"The laboratory analyzed the organic xanthate ester by mass spectrometry."
Plural xanthates refers to multiple salts or esters of xanthic acid.
"The chemist compared the properties of several xanthates."
The name xanthate comes from the Greek root for “yellow,” a reminder of the yellow coloration associated with xanthic acid and some of its compounds.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of xanthate
The word xanthate was formed from xanthic acid with the suffix -ate, in the same broad chemical pattern used for salts and esters. Xanthic acid in turn derives from Greek xanthos, meaning “yellow,” a reference associated with the yellow coloration of xanthic compounds. The same Greek root also appears in words such as xanthine, xanthophyll, and xanthoma.
Related word forms
How xanthate is actually used
This is specialist chemical terminology rather than everyday vocabulary. In mining and mineral processing, xanthate usually denotes a salt used as a flotation collector; outside chemistry, the word is rarely encountered.
Easily confused with xanthate
Xanthic acid is the parent acid, whereas xanthates are its salts or esters.