Potassium amyl xanthate (PAX), CAS 2720-73-2, is the longest-chain common xanthate and the strongest collector – chosen where maximising recovery of sulphide minerals matters more than selectivity. PolyBlueChem supplies PAX 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 | 2720-73-2 |
| Chemical name | Potassium amyl xanthate (potassium pentyl xanthate) |
| Chain length | C5 (amyl) – the longest common xanthate |
| Form | C6H11KOS2; about 202.4 g/mol |
| Type | Strong sulphide flotation collector |
Applications
- Gold – flotation of gold-bearing sulphides where high recovery is the priority.
- Copper – rougher/scavenger collector for copper sulphides.
- Bulk / rougher flotation – where maximum recovery of sulphides is wanted.
- Blending – used with more selective 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 PAX (CAS 2720-73-2) and the full xanthate range (SEX, SIPX, SIBX) with per-batch COA and SDS and FOB/CIF delivery. Contact us with your ore, consumption and delivery port for a quotation.




