In modern industrial rubber compounding, shifting toward non-carcinogenic processing ingredients has redefined regulatory compliance metrics. Zinc Dibutyl Dithiophosphate (universally recognized in B2B chemical procurement as ZBPD) stands out as a high-activity, non-nitrosamine dithiophosphate fast secondary accelerator. Chemically classified under CAS No. 6990-43-8, ZBPD is highly valued because its unique molecular structure contains no nitrogen atoms, rendering it completely incapable of generating hazardous N-nitrosamines during compounding or curing phases. Primarily utilized as a high-performance co-accelerator in EPDM and other low-unsaturation elastomers, it eliminates blooming issues common to ultra-accelerators while building a thermal-stable, reversion-resistant sulfur cross-linking network.
Technical Product Specifications
| Property / Parameter | Standard Specification |
|---|---|
| Chemical Name | Zinc Dibutyl Dithiophosphate (ZBPD) |
| CAS Number | 6990-43-8 |
| Molecular Formula | C16H36O4P2S4Zn |
| Appearance | White or off-white free-flowing powder / dust-free masterbatch granules |
| Zinc Content (%) | 10.5% – 12.5% |
| Phosphorus Content (%) | 9.5% – 11.0% |
| Loss on Drying (%) | ≤ 0.50% |
| Sieve Residue (150 μm) | ≤ 0.10% |
Why Choose Our ZBPD Accelerator?
- ✓ 100% Non-Nitrosamine Clean Profile: Lacking any nitrogen elements in its chemical assembly, ZBPD guarantees complete compliance with restrictive European and global health standards, seamlessly replacing regulated thiurams or carbamates.
- ✓ Outstanding Anti-Reversion Properties: ZBPD promotes mono-sulfidic and di-sulfidic cross-links that showcase higher thermal stability, offering robust protection against modulus reversion over extended, high-heat curing processes.
- ✓ Excellent Dispersion and Bloom Elimination: Highly soluble inside standard rubber networks, ZBPD suppresses surface migration and crystalline white blooming on finished products, which is a frequent drawback when over-dosing conventional ultra-accelerators.
Primary Applications
Accelerator ZBPD is highly targeted for low-unsaturation elastomers like EPDM, but behaves effectively inside Natural Rubber (NR), Styrene-Butadiene Rubber (SBR), and Nitrile Rubber (NBR) matrices:
EPDM Automotive Extrusions
Extensively formulated into continuous vulcanized automotive window profiles, sponge glass-run channels, and complex engine weatherstripping systems requiring rapid line throughput.
High-Heat Seals & Engine Mounts
An ideal secondary booster for dynamic engine mounts, cooling system gaskets, and high-temperature technical under-the-hood components demanding strong thermal resilience.
Transparent & Light-Colored Goods
Selected for brightly colored non-staining engineering components, industrial rubber mats, and flexible technical profiles where surface clarity and aesthetic purity are essential parameters.
⚠ Storage & Handling Guidelines
Maintaining proper warehouse environmental parameters is crucial to preserve the functional purity and long-term activity of Accelerator ZBPD. Because zinc dithiophosphates can undergo minor degradation when exposed to extreme moisture or prolonged heat stress, following standard chemical warehousing rules protects your inventory investment.
- • Warehouse Climate Control: Store all chemical stock packages inside clean, thoroughly dry, and well-ventilated indoor facilities. Ensure storage locations stay isolated from hot steam pipes, open heating vents, or direct solar exposure.
- • Moisture Avoidance & Stack Limits: Keep all bags tightly sealed until active dry weighing takes place. Refrain from high multiple pallet layering over hot summer thermal cycles to eliminate any potential for physical compaction or lump-caking.
- • Shelf Life Strategy: Preserved under stable, un-opened temperature-controlled warehouse conditions, our industrial ZBPD products possess a certified shelf life of 24 months from the manufacturing date. Implementing a continuous First-In, First-Out (FIFO) pipeline is recommended.
Frequently Asked Questions
Why is ZBPD specifically categorized as a “clean, non-nitrosamine” accelerator? +
How does ZBPD help eliminate surface blooming in EPDM profiles? +
What is the typical dosage range for ZBPD when formulating rubber goods? +
Partner with a Reliable Chemical Supplier
We provide premium-grade Rubber Accelerator ZBPD carefully processed to meet international technical benchmarks. Available in high-purity uniform powders and custom dust-free granule configurations to ensure absolute batch precision inside your industrial mixing environment.
