In modern elastomer compounding and environmentally regulated rubber manufacturing, replacing hazardous nitrosamine-generating additives without sacrificing vulcanization performance is essential. Rubber Accelerator TBzTD stands globally as the premier safe alternative to traditional TMTD. Chemically identified as Tetrabenzylthiuram Disulfide (CAS No. 10591-85-2), TBzTD features bulky, high-molecular-weight benzyl groups. Because the resulting secondary amine (dibenzylamine) is non-volatile and does not form regulated carcinogenic N-nitrosamines under German TRGS 552 standards, TBzTD provides rapid curing kinetics, extended scorch delay, and non-blooming performance across Natural Rubber (NR), SBR, NBR, and EPDM formulations.
Technical Product Specifications
| Property / Parameter | Standard Specification |
|---|---|
| Chemical Name | Tetrabenzylthiuram Disulfide (TBzTD) |
| CAS Number | 10591-85-2 |
| Molecular Formula | C30H28N2S4 |
| Appearance | Off-white to light cream crystalline powder / oiled powder / dust-free granules |
| Initial Melting Point (°C) | ≥ 125.0 °C (First Grade) / ≥ 123.0 °C (Qualified Grade) |
| Loss on Drying (%) | ≤ 0.30% |
| Ash Content (%) | ≤ 0.30% |
| Sieve Residue (150 μm / 100 mesh) | ≤ 0.10% |
Why Choose Our TBzTD Accelerator?
- ✓ Nitrosamine-Safe Replacement for TMTD: Complies with strict international workplace and consumer safety regulations (including German TRGS 552), as any trace nitrosamine formed from dibenzylamine is non-carcinogenic and non-volatile.
- ✓ Extended Scorch Delay & Non-Blooming Solubility: Due to its high molecular weight (544.8 g/mol), TBzTD provides noticeably longer processing scorch safety than TMTD or TETD and exhibits superior polymer solubility without surface blooming.
- ✓ High Reversion Resistance & Sulfur Donor Capability: Functions effectively both as a fast secondary booster with sulfenamides (CBS, TBBS) and as a primary sulfur-donor cure agent in low-sulfur EV/semi-EV heat-resistant formulations.
Primary Applications
Accelerator TBzTD is broadly utilized in Natural Rubber (NR), Styrene-Butadiene Rubber (SBR), Butadiene Rubber (BR), Nitrile Rubber (NBR), and EPDM compounds:
Automotive Profiles & Seals
Widely formulated into EPDM weatherstripping, window channels, radiator hoses, and engine mounts requiring clean, non-blooming, and nitrosamine-free curing.
Tires, Belts & Industrial Hoses
Ideal as a secondary booster in passenger tire treads, heavy-duty conveyor belts, and high-pressure hydraulic hoses to speed up press cycles safely.
Medical, Consumer & Cable Goods
Selected for pharmaceutical closures, food-contact gaskets, athletic footwear outsoles, and wire/cable insulation jackets where strict regulatory safety is mandatory.
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 TBzTD passes through extensive laboratory verification protocols—including capillary melting range testing, high-performance liquid chromatography (HPLC) for active assay validation, and free amine screening—ensuring predictable cure kinetics and zero dispersion defects in your mixing room.
- 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, US TSCA, and TRGS 552 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 climate-controlled conditions is essential to protect the free-flowing dispersion quality and chemical purity of Accelerator TBzTD. While stable under standard ambient conditions, prolonged exposure to excessive heat or moisture can cause powder compaction.
- • Temperature & Humidity Controls: Store the chemical inside a completely dry, cool, and well-ventilated dedicated warehouse where ambient temperatures remain below 35°C. Keep storage racks isolated from direct solar radiation, steam pipes, heating vents, and strong oxidizing agents.
- • Sealing & Stacking Management: Keep all bags tightly sealed and undamaged until immediate compounding use. Avoid excessive pallet double-stacking to prevent physical compaction or lumping during warm summer months.
- • Shelf Life & Rotation: Under proper cool, shaded warehouse conditions, our premium TBzTD exhibits a certified shelf life of 24 months from the date of manufacture. A strict First-In, First-Out (FIFO) inventory rotation cycle is strongly recommended.
Frequently Asked Questions
How do I adjust dosage when replacing TMTD with TBzTD? +
Why is TBzTD considered non-carcinogenic compared to TMTD or TETD? +
What is the typical dosage range for TBzTD in EPDM and NR/SBR compounds? +
Partner with a Reliable Chemical Supplier
We provide premium-grade, nitrosamine-safe Rubber Accelerator TBzTD 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.
