In global industrial rubber manufacturing and tire compounding networks, achieving predictable processing safety windows is vital to avoid cost-intensive compound scorching. Rubber Accelerator MBTS (universally recognized in B2B procurement markets as DM) stands as a standard delayed-action thiazole primary accelerator. Chemically classified as Dibenzothiazyl Disulfide (CAS No. 120-78-5), MBTS offers excellent processing safety margins compared to free MBT at processing temperatures below 140°C. Upon reaching curing thresholds, it dissociates into highly active free radicals to deliver a flat, uniform vulcanization plateau, ensuring superior mechanical performance across both Natural Rubber (NR) and diverse synthetic elastomer matrix systems.
Technical Product Specifications
| Property / Parameter | Standard Specification |
|---|---|
| Chemical Name | Dibenzothiazyl Disulfide (MBTS / DM) |
| CAS Number | 120-78-5 |
| Molecular Formula | C14H8N2S4 |
| Appearance | Light yellow or off-white fine powder / oiled powder / dust-free granules |
| Initial Melting Point (°C) | ≥ 170.0 °C (First Grade) / ≥ 165.0 °C (Qualified Grade) |
| Loss on Drying (%) | ≤ 0.30% |
| Ash Content (%) | ≤ 0.30% |
| Sieve Residue (150 μm / 100 mesh) | ≤ 0.10% |
Why Choose Our MBTS (DM) Accelerator?
- ✓ Excellent Processing Scorch Safety: MBTS provides a remarkably stable and secure processing window at internal mixing temperatures below 140°C, drastically lowering caking and pre-cure risks compared to raw MBT.
- ✓ Flat Vulcanization Plateau: Exhibits a stable, flat curing curve that provides broad tolerance margins against localized over-cure reversion, achieving uniform cross-link networks inside thick elastomer geometries.
- ✓ Non-Staining and Non-Discoloring: Retains aesthetic shade profiles in light-colored or white technical rubber items without induce yellowing under standard light or heat stress patterns.
Primary Applications
Accelerator MBTS (DM) is universally formulated across Natural Rubber (NR), Styrene-Butadiene Rubber (SBR), Nitrile Rubber (NBR), Chloroprene Rubber (CR), and EPDM matrices:
Tire Compounds & Profiles
Extensively selected for commercial tire treads, sidewalls, carcass elements, bead insulation matrices, and retread backing compound structures.
Industrial Belting & Footwear outsoles
An optimal choice for heavy mining conveyor belts, automotive V-belts, dynamic hoses, and vibrant brightly-colored shoe outsoles.
Molded Industrial Goods
Selected for thick-walled mechanical bumpers, anti-vibration engine mounts, durable gaskets, and technical non-staining rubber products.
Quality Assurance & Global Compliance
As a leading global partner in industrial chemical manufacturing, we understand that raw material purity, molecular consistency, and strict regulatory tracking directly safeguard your production line metrics. Our advanced manufacturing facilities maintain rigorous quality configurations to ensure total compliance and confidence across all international markets:
- Advanced Laboratory Quality Control: Every commercial batch of our Accelerator MBTS (DM) passes through extensive laboratory verification protocols—including capillary melting range tracking, high-performance liquid chromatography (HPLC) matrix assays, and mesh residue screenings—ensuring zero compound variations.
- Comprehensive International Regulatory Compliance: We maintain a highly proactive approach to global chemical governance. All export shipments are systematically backed by complete regulatory documentation, including up-to-date, comprehensive multilingual GHS Safety Data Sheets (SDS), detailed Certificates of Analysis (CoA), and official tracking credentials fully matching EU REACH and US TSCA parameters.
- Optimized Packaging & Workspace Safety: To lower material handling loss and eliminate airborne chemical dust cross-contamination on your factory floor, we offer tailored logistics configurations. This includes standard multi-wall moisture-resistant kraft paper bags (25kg) lined with protective PE film, bulk jumbo supersacks (FIBCs), and dust-free oiled granule grades suited for automated dosing systems.
⚠ Storage & Handling Guidelines
Maintaining correct warehouse climate parameters is vital to maintain the active purity and performance parameters of Accelerator MBTS. Because thiazole disulfide blocks are sensitive to extreme continuous heat or humidity arrays, following specialized store patterns helps protect your compounding stocks.
- • Warehouse Climate Control: Keep the chemical stock packages allocated inside cold, completely dark, and dry warehouse environments. Ensure storage points stay isolated from moisture footprints, direct solar exposure, dynamic steam ducts, or heat vents.
- • Sealing & Hardening Preventions: Keep all paper bags tightly sealed until active dry weighing takes place. Refrain from configuring heavy multiple pallet layers to avoid mass lump-caking hazards over high summer thermal periods.
- • Shelf Life Strategy: Under clean, temperature-controlled sealed environments, our industrial MBTS products possess a certified shelf life of 24 months from the manufacturing date. Emphasizing a continuous First-In, First-Out (FIFO) pipeline is recommended.
Frequently Asked Questions
What is the core distinction between Accelerator MBT and MBTS (DM)? +
Can MBTS be combined with secondary accelerators to modify curing curves? +
Why is MBTS heavily utilized as a plasticizing mastication agent in open mills? +
What is the typical dosage window for MBTS across global formulations? +
Partner with a Reliable Chemical Supplier
We provide premium-grade Rubber Accelerator MBTS (DM) carefully processed to meet international technical benchmarks. Available in high-purity crystalline powder and custom dust-free granule configurations to ensure absolute batch precision inside your industrial mixing environment.
