Sodium ethyl xanthate (SEX), CAS 140-90-9, is the shortest-chain common xanthate and the most selective collector – the weakest in collecting power, but the best at separating sulphides cleanly. PolyBlueChem supplies SEX and the full xanthate range with per-batch COA and SDS.
Specifications
| Property | Specification |
|---|---|
| Appearance | Pale-yellow to yellow solid / granules |
| Activity (assay) | Available to specification (commonly 90% min) – confirm your limits |
| Free alkali | Available to specification |
A full specification sheet and per-batch certificate of analysis are supplied; confirm the activity and free-alkali limits for your order.
Basic Information
| CAS number | 140-90-9 |
| Chemical name | Sodium ethyl xanthate |
| Chain length | C2 (ethyl) – the shortest common xanthate |
| Form | C3H5NaOS2; about 144.2 g/mol |
| Type | Selective sulphide flotation collector |
Applications
- Selective flotation – separating sulphides that must not be co-floated.
- Easily floated sulphides – ores whose sulphides respond readily.
- Cleaner and selective stages – where a clean concentrate matters most.
- Blending – used with stronger xanthates in staged circuits.
Packaging, storage and documentation
- Moisture-barrier PP/PE bags with inner liner, drums, or jumbo bags.
- Per-batch certificate of analysis (COA) and safety data sheet (SDS).
- Store sealed, cool and dry – xanthates decompose with moisture, heat and time; buy to consumption and rotate stock.
PolyBlueChem supplies SEX (CAS 140-90-9) and the full xanthate range (SIPX, SIBX, PAX) with per-batch COA and SDS and FOB/CIF delivery. Contact us with your ore, consumption and delivery port for a quotation.
