Sodium Ethyl Xanthate
- Product:
- Sodium Ethyl Xanthate / SEX
- CAS No.:
- 140-90-9
- Molecular Formula:
- C₃H₅NaOS₂
- Product Type:
- Xanthate flotation collector
- Appearance:
- Pale yellow to yellow powder or pellets
- Typical Purity:
- ≥90.0%
Sodium Ethyl Xanthate SEX Supplier for Sulfide Ore Flotation
Sodium Ethyl Xanthate (SEX; CAS 140-90-9), also called sodium O-ethyl dithiocarbonate, is a water-soluble, relatively weak and selective xanthate collector used in sulfide mineral flotation. Compared with longer-chain xanthates, SEX is commonly evaluated when selectivity is more important than maximum collecting strength. Final suitability depends on mineralogy, pH, oxidation state, the complete reagent regime and ore-specific flotation tests.
YuXing supplies sodium ethyl xanthate for mining chemical buyers who need specification review, export packaging coordination and sourcing support. For a broader reagent range, see our Mining Chemicals category and Types of Flotation Reagents guide.
Sodium Ethyl Xanthate Buyer Quick Guide
| Selection priority | Compare SEX when selectivity is important; confirm recovery and grade in ore-specific flotation tests. |
| Grade confirmation | Request the current TDS and confirm the offered grade, assay basis and batch COA before purchase. |
| Packaging and shipment | Confirm available pack size, destination requirements and handling classification against the current SDS. |
| For an accurate quote | Send required grade, quantity, destination port, application, preferred packaging and document requirements. |
Sodium Ethyl Xanthate Specifications
| Item | Specification |
|---|---|
| Product name | Sodium Ethyl Xanthate |
| Abbreviation | SEX |
| CAS No. | 140-90-9 |
| EC No. | 205-440-9 |
| Alternate names | Sodium O-ethyl dithiocarbonate; sodium ethylxanthate |
| Molecular formula | C₃H₅NaOS₂ |
| Molecular weight | 144.20 g/mol |
| Product type | Xanthate / flotation collector |
| Appearance | Pale yellow to yellow free-flowing powder or pellets |
| Solubility | Soluble in water |
| Xanthate purity | ≥90.0% |
| Free alkali | ≤0.2% |
| Moisture & volatile matter | ≤4.0% |
| Typical packaging | 50 kg bags / 110–180 kg drums / plywood boxes |
| Storage | Cool, dry and well-ventilated place; protect from moisture, heat and sunlight |
Specification values and packaging above are reference information, not a guaranteed sales specification for every source or batch. Confirm the offered grade in the current TDS and the delivered batch in its COA; use the latest SDS for handling and transport decisions.
Identity and Technical References
The chemical identity and identifiers on this page were checked against public substance records. Collector-strength and reagent-selection statements are based on general flotation guidance and must be confirmed for the actual ore and plant conditions.
- PubChem: Sodium ethylxanthate — CAS number, molecular formula, molecular weight and synonyms.
- ECHA substance information — EC number and registered substance identity.
- AusIMM / Orica Mining Chemicals Flotation Guidebook — general xanthate strength and flotation-selection guidance.
Technical review: October 8, 2026. Product specifications remain subject to the current TDS, SDS and batch COA.
Flotation Applications
As a xanthate collector for sulfide ore flotation, sodium ethyl xanthate is used to improve mineral surface hydrophobicity and support bubble attachment during froth flotation. It is often evaluated in:
- Copper sulfide ore flotation circuits
- Lead-zinc sulfide ore beneficiation
- Gold-bearing sulfide ore flotation where xanthate collectors are required
- Plant trials comparing collector strength, selectivity, dosage behavior and reagent cost
For related flotation reagents, compare Sodium Butyl Xanthate, Sodium Isopropyl Xanthate, Potassium Amyl Xanthate, MIBC frother and Thionocarbamate Collector.
How to Choose Sodium Ethyl Xanthate
Sodium ethyl xanthate should be selected according to ore mineralogy, target mineral, pH, oxidation condition, collector strength and selectivity requirement. Compared with longer-chain xanthates, SEX is generally the weaker, more selective option. Consider it where the target mineral already floats relatively easily and unwanted sulfide recovery needs to be controlled; compare alternatives through ore-specific testing rather than assuming one collector will suit every circuit.
| Reagent | Typical Positioning | Selection Note |
|---|---|---|
| Sodium Ethyl Xanthate / SEX | Short-chain, relatively weak and selective xanthate collector | Evaluate where selectivity is the priority; verify recovery, grade and dosage through ore tests. |
| Sodium Isopropyl Xanthate / SIPX | Generally stronger than SEX, with an intermediate strength/selectivity trade-off | Compare when SEX is insufficient for the target mineral; verify the result in plant-specific tests. |
| Sodium Butyl Xanthate / SBX | Xanthate collector used in sulfide mineral flotation | Useful comparison option when evaluating collector strength and cost. |
| Potassium Amyl Xanthate / PAX | Stronger xanthate collector for selected sulfide ore applications | Often tested when higher collecting power is needed, but selectivity must be controlled. |
The relative-strength comparison above follows the xanthate section of Orica Mining Chemicals' Flotation Guidebook. It is a general selection principle, not a test result or performance guarantee for YuXing's offered grade.
Actual plant performance depends on the complete reagent regime, including collectors, frothers, activators, depressants and pH modifiers. Laboratory and pilot testing should be completed before plant-scale dosing.
Packaging, Storage and Buying Notes
Sodium ethyl xanthate should be stored in sealed packaging in a cool, dry and ventilated warehouse. Keep it away from moisture, heat, direct sunlight, oxidizing materials and acids. Buyers should confirm product grade, packaging, shelf-life expectation and destination handling requirements before shipment.
For a bulk quotation, send Sodium Ethyl Xanthate (CAS 140-90-9), required grade, quantity, destination port, intended application, preferred packaging and required documents through the inquiry form. YuXing will confirm available grade, packaging, lead time, minimum order quantity and TDS/SDS/COA availability for the proposed supply before order confirmation.
FAQ: Sodium Ethyl Xanthate
What is Sodium Ethyl Xanthate used for?
Sodium Ethyl Xanthate is used as a flotation collector in sulfide ore beneficiation, especially in mineral processing circuits where xanthate reagents are used to improve mineral recovery.
Is Sodium Ethyl Xanthate a xanthate collector?
Yes. Sodium Ethyl Xanthate is a xanthate flotation collector. It is used to support mineral surface hydrophobicity and bubble attachment in froth flotation.
What is the CAS number of Sodium Ethyl Xanthate?
The CAS number of Sodium Ethyl Xanthate is 140-90-9.
What ores is Sodium Ethyl Xanthate used for?
It is commonly evaluated for copper sulfide, lead-zinc sulfide and gold-bearing sulfide ore flotation where xanthate collectors are required. Final selection should be confirmed by ore testing.
How should Sodium Ethyl Xanthate be stored?
Store sodium ethyl xanthate in sealed packaging in a cool, dry and ventilated place. Protect it from moisture, heat, sunlight, acids and oxidizing materials, and follow the current SDS.
Can YuXing supply Sodium Ethyl Xanthate in bulk?
YuXing can support sodium ethyl xanthate bulk inquiries with product specifications, packaging options and document coordination. Send grade, quantity and destination details for quotation support.
Why choose Sodium Ethyl Xanthate instead of SIPX or PAX?
SEX is generally the weaker, more selective xanthate. It may be evaluated when unwanted sulfide recovery must be controlled. SIPX or PAX can provide stronger collecting power, but the correct reagent and dosage must be confirmed through ore-specific flotation tests.
How can I request TDS, MSDS, COA and quotation?
Submit product grade, quantity, application, destination port and required documents through the YuXing contact page. YuXing will check available documents and quotation conditions.
Product Information Notice
- The values shown are typical reference information and are not a guaranteed sales specification. Final specifications are subject to the confirmed product, grade and batch COA.
- Packaging, transport method and hazard classification must be confirmed according to product grade, order quantity, destination regulations, shipping route and the current SDS.
- TDS, SDS/MSDS and COA files are provided according to product, batch and destination requirements. Public documents should not be treated as final delivery documents unless issued for the current batch.
- This page is for procurement discussion and technical selection reference only. It does not replace safety, regulatory, process design or site operating advice. Users must follow local regulations and the latest SDS.
