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High thermal stability suitable for high-temperature polymer processing up to 220 °C.
Low volatility and minimal odor, enhancing workplace safety and product consistency.
Excellent hydrolytic stability due to branched neodecanoyl ligands resisting moisture-induced degradation.
Non-staining performance in sensitive polymer systems including clear PVC and polyurethanes.
Controlled reactivity profile enabling precise catalytic timing in condensation-cure silicone and polyester systems.
Catalyst for addition-cure and condensation-cure silicone elastomers and sealants.
Stabilizer and catalyst in rigid and flexible polyvinyl chloride (PVC) formulations.
Crosslinking promoter in alkyd resins and moisture-cure polyurethane coatings.
Reaction accelerator in polyester-based thermoset composites and gel coats.
Co-catalyst in tin-mediated transesterification processes for bio-based plasticizers.
| Chemical Type | Organotin carboxylate catalyst |
| Product Form | Pale yellow to amber viscous liquid |
| Appearance | Clear, homogeneous liquid; no visible particulates or phase separation |
| Melting Point | Approx. –15 °C (liquid at room temperature) |
| Primary Applications | Silicone curing, PVC stabilization, polyurethane crosslinking |
| Key Features | Low volatility, hydrolytic resistance, non-staining, controlled reactivity |
| Benefits | Extended pot life, reduced fogging, improved shelf stability, low migration tendency |
| Regulatory Compliance | REACH registered; compliant with EU Directive 2009/48/EC (Toy Safety) for tin migration limits |
| Common Compatible Systems | Suitability |
| Condensation-cure RTV silicones (acetoxy & oxime types) | Highly Recommended – Fast, reproducible cure with low by-product volatility |
| Rigid PVC compounds (e.g., profiles, pipes) | Recommended – Effective thermal stabilizer with synergistic effect with Ca/Zn systems |
| Moisture-cure polyurethane adhesives & sealants | Suitable – Moderate catalytic activity; compatible with common isocyanate prepolymers |
| Unsaturated polyester resins (UPR) | Recommended – Enhances gel time control without premature viscosity rise |
Q1: What is the CAS Registry Number for Dioctyltin Bis(neodecanoyloxy)?
A: The CAS Registry Number is 301-10-0.
Q2: What is the typical recommended dosage range in silicone sealants?
A: Standard loading is 0.05–0.3 phr (parts per hundred resin), depending on cure speed requirements and formulation complexity.
Q3: How does it compare to dibutyltin dilaurate (DBTDL) in terms of migration and regulatory acceptance?
A: Dioctyltin bis(neodecanoyloxy) exhibits significantly lower migration potential than DBTDL due to higher molecular weight and steric hindrance from neodecanoyl groups, supporting compliance with stricter food-contact and toy-safety regulations.
Q4: Is extraction testing data available for food packaging applications?
A: Yes — validated migration studies per EU Regulation (EC) No. 10/2011 show total tin migration < 0.01 mg/kg in simulant D (ethanol 50% v/v) at 40 °C for 10 days, well below the specific migration limit (SML) of 0.1 mg/kg.
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