2-Mercaptobenzothiazole (MBT)
CAS Number: 149-30-4
2-Mercaptobenzothiazole (MBT) is a heterocyclic collector and activator used in the flotation of copper, lead, and precious metal sulfide minerals. Its benzothiazole ring system provides strong chemisorption onto mineral surfaces, and it is particularly valued as an activator for oxidized copper and antimony minerals. MBT is also used as a co-collector with xanthates to extend collector performance on complex oxidized ores.
Technical Specifications
| appearance | Light yellow to yellow powder |
| purity (%) | ≥97 |
| pH (1% solution) | 4-6 |
| melting point (°C) | 170-180 |
Applications
- Activation and collection of oxidized copper minerals
- Antimony and bismuth sulfide mineral flotation
- Lead and silver mineral flotation enhancement
- Co-collector blending with xanthates for oxidized ores
- Precious metal sulfide pre-concentration circuits
Key Features
- Strong chemisorption onto copper, lead, and antimony minerals
- Effective activator for difficult-to-float oxidized copper ores
- Synergistic performance when blended with xanthate collectors
- Stable crystalline form for reliable dosing and storage
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CAS Number
149-30-4
Category
Mining / Flotation ChemicalsAvailability
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