Potassium Ethyl Xanthate CAS140-89-6 o-ethyldithiocarbonato potassium

Place of Origin: Shandong,China (Mainland)
Brand Name: MOSINTER
CAS No.: 140-89-6
Molecular weight: 160.3
Molecular formula: C3H5KOS2
Density: 1,558 g/cm3
Melting Point: 209-214 °C
Flashing point: 96°C

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Product Description

Payment & Shipping Terms Supply Capacity
Payment Terms:L/C, T/T, WUProduction Capacity:1000 Tons/year
Min. Order:100 KilogramPacking:According to the...
Means of Transport:Ocean, Air, LandDelivery Date:within 7 days

Potassium Ethyl Xanthate (CAS: 140-89-6)

Item

Index

Appearance

Slight gray or grey gray free flowing powder or   pellet 

Xanthate   pruity % min.

≥ 84.0

Free   alkali % max.

≤ 0.4

Moisture   % max

≤ 10.0

Volatile   % max

≤ 10.0


Potassium ethyl xanthate
is an organosulfur compound with the chemical formula CH3CH2OCS2K. It is a pale yellow powder that is used in the mining industry for the separation of ores. Unlike the related sodium ethyl xanthate, the potassium salt exists as an anhydrous salt.

Production and properties

Xanthate salts are prepared by the action of alcohols on carbon disulfide. The alkoxide is generated in situ from potassium hydroxide:

CH3CH2OH + CS2 + KOH → CH3CH2OCS2K + H2O

Potassium ethyl xanthate is a pale yellow powder that is relatively stable at high pH but rapidly hydrolyses at pH<9 at 25 °C. Unlike the sodium derivative, potassium xanthate crystallizes as the anhydrous salt and is nonhygroscopic.

Applications

Potassium ethyl xanthate is predominantly used in the mining industry as flotation agent for extraction of the ores of copper, nickel, and silver. The method exploits the affinity of these "soft" metals for the organosulfur ligand. Potassium xanthate is a useful reagent for preparing xanthate esters from alkyl and aryl halides. The resulting xanthate estes are useful intermediates in organic synthesis.

Safety

The LD50 is 683 mg/kg (oral, rats) for potassium ethyl xanthate.

Category: Other Chemical Products


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