Description
Chemical Identity & Description
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Product Name: Ethyl Thiocarbamate / Sodium Diethyl Dithiocarbamate
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Chemical Formula: (C₂H₅)₂NCSSNa
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Synonyms: Sodium Diethyldithiocarbamate, DEDTC
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CAS Number: 148-18-5
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Molecular Weight: 179.26 g/mol
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Appearance: Yellowish to amber liquid or solid powder (depending on form)
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Solubility: Fully soluble in water
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Odor: Characteristic, slightly sulfurous
Ethyl Thiocarbamate is typically supplied as a liquid or water-soluble salt, ensuring rapid dispersion in flotation circuits. It enhances the hydrophobic properties of sulfide minerals, allowing for better attachment to air bubbles during flotation.
Technical Specifications
| Property | Specification |
|---|---|
| Purity | ≥ 95% (typical commercial grade) |
| pH (1% Solution) | 9.0 – 11.0 |
| Density (25°C) | 1.00 – 1.10 g/cm³ |
| Solubility in Water | Complete |
| Form | Liquid or crystalline solid |
| Shelf Life | 12 months (stored in original packaging) |
| Packaging | 200 kg drums or 1000 kg IBC containers |
Applications
⛏️ Mining and Mineral Processing
Ethyl Thiocarbamate is primarily used in the flotation of:
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Copper sulfide ores
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Lead and zinc ores
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Polymetallic and complex sulfide ores
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Gold and silver-bearing ores
It acts by forming stable, hydrophobic complexes with metal ions on mineral surfaces, improving recovery rates and concentrate grades even in low pH or high salinity environments.
Advantages
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✅ High Selectivity: Targets desired minerals while minimizing gangue flotation
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✅ Efficient Collector: Requires low dosage for effective flotation performance
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✅ Good Froth Stability: Supports froth formation, enhancing flotation recovery
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✅ Compatible with Other Reagents: Can be blended with xanthates or other thiol collectors
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✅ Lower Environmental Impact: Biodegradable formulation with reduced toxicity
Storage & Handling
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Storage Conditions: Store in cool, dry, and well-ventilated spaces
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Precautionary Measures: Avoid contact with acids and oxidizing agents
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Personal Protection: Use gloves, goggles, and protective clothing
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Disposal: Follow local environmental regulations and SDS guidelines
Conclusion
Ethyl Thiocarbamate / Sodium Diethyl is a versatile and powerful flotation collector designed to optimize the recovery of metal sulfides and precious metals. Its high selectivity, low dosage requirement, and stable frothing ability make it a preferred choice in modern mineral processing operations. Whether used alone or in combination with other reagents, it provides a cost-effective and environmentally friendlier solution for ore beneficiation.
