Overview
Sodium isobutyl xanthate (CAS 25306-75-6 ), also known as sodium O-isobutyl dithiocarbonate, is a xanthate collector used in the froth flotation of sulfide and oxide ores. It selectively binds to target mineral surfaces, enabling their separation from gangue material in mineral processing operations.
In copper, lead, and zinc sulfide flotation circuits, it acts as a primary collector, improving mineral recovery rates at the concentrate stage. Gold and silver ore processors use it to float sulfide-associated precious metals where selectivity against iron sulfides is required.
It is also applied in the flotation of nickel and molybdenum ores, particularly where moderate chain-length collectors outperform shorter or longer xanthate alternatives. Some operations blend it with other collectors or frothers to optimize grade-recovery curves.
This chemical is particularly effective for complex polymetallic ores where precise separation is necessary. Sodium isobutyl xanthate is supplied as a yellow to pale powder or granular solid for industrial use.
It is available in technical grade , the standard specification for mineral processing applications. Packaging typically ranges from 25 kg bags to bulk quantities suited to mine-site consumption volumes.
The product ensures high efficiency in mineral recovery while maintaining the necessary selectivity for high-grade concentrates. It remains a staple reagent in the global mining and metallurgy industry for diverse ore types.
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Physical Properties
| Boiling Point | 478.58°C[at 101 325 Pa] |
| Density | 1.24[at 20℃] |
| Odor | Strong, unpleasant odor |
| Form | Yellowish-brown powder |
| Water Solubility | 662.6-510000mg/L at 20-25℃ |
| Vapor Pressure | 0-0Pa at 25℃ |
| Log P | -1.33 at 20℃ |
Safety & Handling
Danger GHS02 GHS07 GHS09 Hazard Statements H228 Flammable solid H242 Heating may cause a fire H251 Self-heating; may catch fire H260 In contact with water releases flammable gases which may ignite spontaneously H302 Harmful if swallowed H312 Harmful in contact with skin H315 Causes skin irritation H317 May cause an allergic skin reaction H319 Causes serious eye irritation H332 Harmful if inhaled H335 May cause respiratory irritation H400 Very toxic to aquatic life H411 Toxic to aquatic life with long lasting effects Precautionary Statements P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P223 Do not allow contact with water. P234 Keep only in original packaging. P235 Keep cool. P240 Ground and bond container and receiving equipment. P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P391 Collect spillage. P403 Store in a well-ventilated place. P405 Store locked up. P407 Maintain air gap between stacks/pallets. P410 Protect from sunlight. P411 Store at temperatures not exceeding … °C/…°F. P413 Store bulk masses greater than … kg/… lbs at temperatures not exceeding … °C/…°F. P420 Store away from other materials. P501 Dispose of contents/container in accordance with local regulations. P231+P232 Handle and store contents under inert gas/… . P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P370+P378 Use … for extinction. P402+P404 Store in a dry place. Store in a closed container. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P302+P335+P334 IF ON SKIN: Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Other Names
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Chemical Properties
- CAS Number
- 25306-75-6
- EC Number
- 246-805-2
- Mol. Weight
- 172.2
- Category
- Organometallic Compounds