Potassium Ethyl Xanthate (PEX)

Product list

Chemical Name

Potassium Ethyl Xanthate

Structure
Formula
C₃H₅KOS₂ /
CH₃CH₂OCS₂K
CAS 140-89-6
Synonym name
Potassium ethylxanthogenate,
Potassium O-ethylxanthate,
Ethylxanthic acid potassium salt,
Potassium xanthate,
Z3,
PEX,
KEX
UN Number 3288
Molecular weight 160.3g/mol
EINECS number 205-439-3
H.S. Code 293090.90

Specification

Appearance White to light yellow crystalline solid powder or pellets.
Stability Hygroscopic (absorbs moisture) and decomposes in air over time.
Odor Strong, unpleasant odor (due to decomposition into carbon disulfide).
Solubility Soluble in water and alcohol, decomposes in acidic conditions or when heated.
Melting point 209-214^oC
Bulk density 1.558g/cm³
Active ingredient ≥ 90.0%

Application

PEX/ KEX is a selective collector, widely used in the recovery of copper, zinc, nickel, gold and the flotation of copper-bearing golden iron ore, as well as the preparation of difficult-to-treat copper-lead oxides. The ratio can also be improved and the effect is satisfactory.

Usually used in the flotation process.

Handing and Safety

Flammable Irritant

GHS Hazard Statements:

H226: Flammable liquid and vapor.

H319: Causes serious eye irritation.

H335: May cause respiratory irritation.

Package

120kg/drum or 850kg/wooden crate,

16.08MT/20ft (drum) or 17MT/20ft (crate),

Keep in dry and cool place, avoid wet, rain, and sunlight.

Shelf time: 24 months.

MSDS Sheet

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