Potassium Ethyl Xanthate (KEX)
CAS Number: 140-89-6
Potassium Ethyl Xanthate (KEX) is a standard short-chain xanthate collector used extensively for base metal sulfide flotation, particularly copper, lead, and nickel ores. Its potassium salt form offers slightly enhanced solubility and stability compared to the sodium analogue. KEX is effective across a wide pH range and commonly used as a reference collector in flotation test programs.
Technical Specifications
| appearance | White to light yellow powder |
| purity (%) | ≥90 |
| moisture (%) | ≤1.0 |
| pH (1% solution) | 10-13 |
Applications
- Copper, lead, and nickel sulfide ore flotation
- Reference collector for flotation test programs
- Combined use with longer-chain xanthates for mixed ores
- Silver sulfide mineral recovery
- Continuous and batch flotation mill operations
Key Features
- Excellent selectivity for base metal sulfides over gangue
- Stable under alkaline and neutral pH flotation conditions
- Compatible with all common frothers and pH regulators
- Widely accepted global standard for sulfide flotation
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CAS Number
140-89-6
Category
Mining / Flotation ChemicalsAvailability
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