High-Stability Dilauryl Thiodipropionate (DLTDP) | Bulk Antioxidant Supplier
Name: Dilauryl Thiodipropionate
Cas: 123-28-4
Purity: 99%
MOQ: 1KG
Directory Guidance on Dilauryl Thiodipropionate
Chemical Structure
Basic Info
Dilauryl thiodipropionate (DLTDP) is a premium thioester-based secondary antioxidant widely utilized to prevent thermal degradation and preserve the structural integrity of polymers during long-term aging. As an industry-leading B2B chemical manufacturer, we supply high-performance dilauryl thiodipropionate engineered to deliver exceptional heat aging protection, color retention, and chemical stability. Functioning as an ultra-efficient peroxide decomposer, this white crystalline additive works cooperatively with primary hindered phenolic antioxidants to safeguard plastics, elastomers, and synthetic lubricants against brittleness, cracking, and mechanical breakdown at elevated operating temperatures.
Parameter | Premium Industrial Grade Specification |
Product Chemical Name | Dilauryl Thiodipropionate (DLTDP / Antioxidant 412S alternative) |
CAS Number | 123-28-4 |
Molecular Formula | C30H58O4S |
Assay (GC) | \(\ge \) 99.0% |
Appearance | White crystalline powder or granular flakes |
Melting Point Range | 39.5°C – 41.5°C |
Acid Value (mg KOH/g) | \(\le \) 0.05 |
Volatiles / Moisture | \(\le \) 0.1% |
Product Packaging
Our commercial-grade dilauryl thiodipropionate raw material ensures predictable thermo-oxidative protection across multiple demanding manufacturing sectors:
- PP & PE Compounding: Acts as a staple stabilizer for polypropylene (PP) auto parts, polyethylene (PE) pipes, and heavy-duty industrial film lines exposed to continuous heat.
- ABS & Engineering Resins: Prevents polymer chain scission and impact strength reduction in acrylonitrile butadiene styrene (ABS) and structural electronic housings.
- Adhesives & Hot-Melt Formulations: Stabilizes pressure-sensitive and hot-melt adhesive bonds, preventing viscosity drift, skinning, and loss of tackiness during prolonged storage in heating tanks.
- Rubber & Elastomers: Retains elongation properties and surface elasticity in styrene-butadiene rubber (SBR) and crosslinked polyethylene (XLPE) wire coatings.
FAQ
While phosphite stabilizers (like Antioxidant 168) primarily protect polymers against processing degradation inside the high-shear extruder, thioesters like DLTDP are designed to destroy hydroperoxides during the product’s actual long-term shelf life, making DLTDP essential for parts exposed to ongoing heat.
Depending on your final heat stability target, the typical loading ratio ranges between 0.1% and 0.3% when blended in a 1:1 or 1:2 ratio with a primary phenolic antioxidant. Our technical service team can run simulation profiles tailored to your specific resin grade.
Related References
Why Plastics Procurement Managers and R&D Compounders Source Our DLTDP Raw Material
For purchasing specialists in the polymer compounding and masterbatch sectors, sourcing secondary stabilizers requires finding an additive that offers consistent molecular weight preservation without causing premature blooming or discoloration. Our dilauryl thiodipropionate CAS 123-28-4 is manufactured under stringent purity controls to eliminate residual organic acids, protecting your extrusion equipment from corrosion while maintaining product reliability.
- Powerful Phenolic Synergy: Delivers highly effective Long-Term Heat Aging (LTHA) properties when combined with primary stabilizers like Antioxidant 1010 or 1076, outperforming single-antioxidant formulations.
- Non-Discoloring Color Control: Effectively suppresses the formation of quinoid structures (the primary cause of polymer yellowing), ensuring your final plastics retain their original optical clarity and aesthetic value.
- FDA Food-Contact Compliance: Synthesized and packaged under strict hygienic protocols, meeting regulatory compliance criteria for use in indirect food-packaging films, polyolefin wraps, and containers.
- Low Volatility and Excellent Melt Processing: Features high thermal stability during hot-melt extrusion, minimizing smoke generation, volatile emissions, and chemical plate-out on manufacturing dies.
Manufacturer of Dilauryl Thiodipropionate
1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.
- Physical Form Options: Available in both fine powder for precise dry-blending and low-dust spherical granular flakes for automated gravimetric feeding systems.
- Industrial Packaging: Supplied in standard 25kg moisture-proof cardboard cartons lined with anti-static PE bags, or 500kg bulk super sacks optimized for large-scale resin producers.
- Storage Best Practices: Store in a cool, dry, well-ventilated warehouse. Keep containers tightly sealed below 30°C to prevent physical clumping, as DLTDP has a relatively low melting point.
