Sodium isobutyl xanthate (SIBX) is a pale yellow to yellowish powder or pellet with pungent odor, formula C5H9NaOS2, molecular weight 172.24 g/mol. Density around 1.1 g/cm³, decomposes above 150°C; freely soluble in water (up to 300 g/L), forms insoluble metal complexes. pH of 1% solution 7-9; produced by reacting isobutanol with CS2 and NaOH. Acts as a flotation collector for sulfide minerals.
Typical Properties
| Molecular formula | C5H10OS2.Na |
|---|---|
| Molecular weight | 172.24 g/mol |
| Form | Yellowish-brown powder |
| Odor | Strong, unpleasant odor |
| Boiling point | 478.58°C[at 101 325 Pa] |
| Density | 1.24[at 20°C] |
| Water solubility | 662.6-510000mg/L at 20-25°C |
| GHS signal word | Danger · Flammable, Irritant / harmful, Environmental hazard |
| Grades available | Technical Grade |
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 Isobutyl Xanthate
Applications
Primarily a collector in froth flotation for nonferrous sulfides like copper, lead, zinc, and pyrites; effective in natural and precious metal recovery circuits.
Safety & Risks
Irritates skin/eyes; inhalation causes respiratory issues. Combustible; incompatible with oxidizers. UN3342, Hazard Class 4.2; wear PPE, ventilate.
Packaging
In 25kg bags or 850kg wooden boxes with liners. Store dry and cool to prevent decomposition.