In modern industrial elastomer compounding, achieving high thermal stability and eliminating cross-linking degradation during long cure cycles is critical. Rubber Vulcanizing Agent DTDM is widely recognized as a premier sulfur donor. Chemically classified as 4,4′-Dithiodimorpholine (CAS No. 103-34-4), DTDM liberates active free sulfur at curing temperatures to generate a high proportion of stable mono-sulfidic and di-sulfidic cross-links. This chemical pathway provides compounds with unrivaled resistance to heat reversion, heavy mechanical fatigue, and structural oxidation compared to conventional elemental sulfur curing setups.
Technical Product Specifications
| Property / Parameter | Standard Specification |
|---|---|
| Chemical Name | 4,4′-Dithiodimorpholine (DTDM) |
| CAS Number | 103-34-4 |
| Molecular Formula | C8H16N2O2S2 |
| Appearance | White or light yellow crystalline powder / granules |
| Initial Melting Point (°C) | ≥ 120.0 °C |
| Loss on Drying (%) | ≤ 0.30% (≤ 0.40% for oiled configurations) |
| Ash Content (%) | ≤ 0.30% |
Why Choose Our DTDM Vulcanizing Agent?
- ✓ Outstanding Anti-Reversion Properties: By steering cross-linking toward mono- and di-sulfide bonds rather than less stable poly-sulfidic links, DTDM protects natural rubber from severe reversion during long, high-temperature cures.
- ✓ Elite Processing Scorch Safety: DTDM behaves with excellent stability at standard mixing and milling temperatures. It releases vulcanizing sulfur only after reaching curing temperature thresholds, allowing safe handling of complex extrusion geometry.
- ✓ Zero Blooming Concerns: Unlike traditional elemental sulfur or some alternative sulfur donors, DTDM dissolves uniformly into rubber compounds. This characteristic eliminates surface blooming flaws and maintains the pristine appearance of cured articles.
Primary Applications
DTDM is extensively utilized in natural rubber (NR), styrene-butadiene rubber (SBR), nitrile elastomer (NBR), and EPDM compounding recipes:
Tire Manufacturing
Crucial for high-performance tire carcass compounds, sidewalls, steel-cord skimming plies, and massive OTR or aircraft tires exposed to massive dynamic fatigue.
Heat-Resistant Engineering Goods
Perfect for under-hood automotive seals, engine mounts, high-pressure steam hoses, oil-field rubber parts, and high-tension conveyor lines.
Thick-Sectioned Elastomers
Ideal for large industrial shock absorbers, bridge bearing pads, and heavy marine dock fenders that require uniform internal curing without surface over-cure.
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 Vulcanizing Agent DTDM passes through extensive laboratory verification protocols—including capillary melting range profiling, gas chromatography for assay purity verification, and precise residual ash analysis—ensuring absolute matrix uniformity and zero performance variance in your compounding plant.
- 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 paper bags (25kg), heavy bulk jumbo supersacks (FIBCs), and dust-controlled granule grades perfectly suited for automated weighing systems.
⚠ Storage & Handling Guidelines
Maintaining correct climate-controlled conditions is essential to protect the molecular performance stability of Vulcanizing Agent DTDM. Because it is a crystalline sulfur donor, sub-optimal storage can encourage moisture absorption, leading to material caking and reduced chemical uniformity during industrial mixing cycles.
- • Environmental Controls: Store the chemical inside a completely dry, cool, and well-ventilated dedicated warehouse. Ensure that storage racks remain isolated from direct solar heating, steam pipes, open flame hazards, and strong acidic raw materials.
- • Sealing Management: Keep all industrial bags completely tied and undamaged during processing. Partially consumed packaging elements must be mechanically re-sealed immediately to minimize exposure to indoor workshop humidity.
- • Shelf Life & Rotation: Under standard cool, shaded warehouse conditions, our premium DTDM exhibits a certified shelf life of 24 months from the date of manufacture. A strict First-In, First-Out (FIFO) batch cycle is strongly advised to maximize production uniformity.
Frequently Asked Questions
What is the mechanism of DTDM as a sulfur donor? +
Can DTDM completely replace elemental sulfur in a recipe? +
In what physical forms can you supply vulcanizing agent DTDM? +
Partner with a Reliable Chemical Supplier
We provide premium-grade Rubber Vulcanizing Agent DTDM carefully formulated to meet international technical benchmarks. Available in high-purity fine powder and custom dust-free configurations to ensure absolute batch precision inside your industrial mixing environment.
