Sodium Isopropyl Xanthate (CAS 140-93-2) is a sodium xanthate salt supplied as a white to light-yellow powder or crystals, also known as SIPX, and used as a selective collector in alkaline flotation circuits for copper, lead, precious metals and sulfidized oxides at dosages of 15-150 g/t ore. Density 1.0-1.2 g/cm³, decomposes at high temperatures; soluble in water (300 g/L), pH 7-9 in solution. Forms chelates with metals; synthesized from isopropanol, CS2, and NaOH.
Typical Properties
| Molecular formula | C4H8OS2.Na |
|---|---|
| Molecular weight | 158.22 g/mol |
| Appearance | Light-yellow crystals. Soluble in water. Deliquescent, decomposes 150C. |
| Form | White to yellowish powder |
| Color | Light yellow/green |
| Odor | Mild disagreeable odor |
| Boiling point | 466.98°C[at 101 325 Pa] |
| Density | 1.35[at 20°C] |
| Water solubility | Complete solubility in water |
| GHS signal word | Danger · Flammable, Corrosive, Acute toxicity, Irritant / harmful, Health hazard, Environmental hazard |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Sodium Isopropyl Xanthate
Applications
In alkaline flotation for copper, lead, precious metals, and sulfidized oxides; typical dosage 15-150 g/t ore in rougher/scavenger stages.
Safety & Risks
Skin/eye irritant; decomposes in acids. Combustible; avoid acids/oxidizers. Handle with gloves; UN3342, Hazard Class 4.2.
Packaging
In 25kg bags or iron drums, airtight to preserve stability. Professional transport required.