Antioxidant MBZ (Zinc 2-Mercaptobenzimidazole)
CAS Number: 3030-80-6
Zinc 2-Mercaptobenzimidazole (MBZ) is a non-staining antioxidant of the benzimidazole family that provides excellent protection against thermal oxidation and copper-catalyzed degradation in rubber compounds. It is particularly effective in NR, SBR, NBR, and EPDM compounds where metal ion contamination is a concern. MBZ is often used in combination with TMQ for a synergistic antioxidant effect.
Technical Specifications
| ash (%) | ≤0.50 |
| appearance | White to off-white powder |
| purity (%) | ≥97.0 |
| moisture (%) | ≤0.50 |
| zinc content (%) | 19.5–21.0 |
| melting point (°C) | >280 (decomp.) |
Applications
- NR and SBR rubber goods with metal contact
- NBR oil seals and gaskets near copper fittings
- EPDM roofing and weatherstripping
- Latex gloves and medical rubber articles
- Wire and cable rubber insulation
Key Features
- Non-staining antioxidant for light-colored rubber
- Effective copper-deactivating antioxidant
- Synergistic with TMQ/RD for comprehensive aging protection
- Suitable for medical and food-contact rubber applications
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CAS Number
3030-80-6
Category
Rubber / Tire ChemicalsAvailability
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