Rubber Accelerator CBS (CZ), chemically identified as N-Cyclohexyl-2-benzothiazole sulfenamide (CAS No. 95-33-0), is a highly active, delayed-action sulfenamide accelerator. It is the industry standard for achieving a balance between processing safety and rapid vulcanization in natural rubber (NR), styrene-butadiene rubber (SBR), and reclaimed rubber compounds.
Conclusion: CBS (CZ) is the primary choice for industrial rubber manufacturing where high processing safety and fast cure rates are required simultaneously.
Henan GO Biotech ensures that our CBS (CZ) meets stringent purity standards, appearing as a gray-white to light yellow powder or granulated form. It is soluble in benzene, chloroform, and carbon disulfide, but remains insoluble in water and gasoline.
| Property | Specification/Details |
|---|---|
| Chemical Formula | C13H16N2S2 |
| Molecular Weight | 264.41 |
| Melting Point | ≥ 98.0 ℃ |
| Functionality | Sulfenamide Delayed-Action Accelerator |
Conclusion: The chemical stability and specific solubility of CBS (CZ) make it highly compatible with diverse organic rubber matrices.
As a sulfenamide-class accelerator, CBS (CZ) provides a significant induction period before vulcanization begins. During the early stages of heating (the "scorch" phase), the chemical structure remains stable, preventing premature cross-linking. Once the critical temperature is reached, it decomposes rapidly to release active sulfur species, facilitating a "short-curing" cycle.
Conclusion: The mechanism of CBS (CZ) optimizes production efficiency by combining safety during processing with speed during the final cure.
Choosing the right accelerator depends on the specific requirements of the production line and the final product environment.
| Feature | CBS (CZ) | MBTS (DM) | TBBS (NS) |
| Scorch Resistance | Excellent | Moderate | Superior |
| Curing Speed | Fast (After induction) | Slow | Fast |
| Typical Use | NR/SBR General Items | Universal/Latex | High-Stress Tires |
Judgment: CBS (CZ) offers a more balanced performance profile for SBR-based industrial products compared to the slower MBTS.
Crucial for tire treads, sidewalls, and carcasses, where dynamic stress resistance and heat stability are vital.
Widely used in the production of conveyor belts, hoses, rubber seals, and electrical cable insulation.
Ideal for heavy-duty rubber soles and industrial boots requiring high durability and aging resistance.
Conclusion: Its versatility across heavy-duty industrial sectors makes CBS (CZ) a foundational additive in global rubber manufacturing.
Q: Can CBS (CZ) be used in food-contact rubber products?
A: No. Due to its inherent bitterness and chemical composition, it is not recommended for applications involving contact with food or beverages.
Q: Is CBS (CZ) toxic?
A: It is generally considered non-toxic for industrial handling when proper safety protocols and PPE are followed, though it has a low characteristic odor.
Q: What is the recommended storage condition?
A: It should be stored in a cool, dry, well-ventilated area, away from direct sunlight. The standard shelf life is 12 months under these conditions.
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