Reaxis® C318 - Dioctyltin Dineodecanoate
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REAXIS® C318 (Dioctyltin Dineodecanoate) is an octyl-based organotin used most commonly as a catalyst for polyurethane and silicone condensation reactions. The presence of the neodecanoate ligand and the percentage of active tin metal make Dioctyltin Dineodecanoate a suitable candidate across a broad formulation spectrum. The butyl analog of Dioctyltin Dineodecanoate would be REAXIS® C221 (Dibutyltin Dineodecanoate), while the methyl analog is REAXIS® C325 (Dimethyltin Dineodecanoate). Alternative octyl derivatives would include REAXIS® C228 (Dioctyltin Diacetate), REAXIS® C216 (Dioctyltin Dilaurate) and REAXIS® C314 (Dioctyltin bis-(2-ethylhexyl Maleate). Inorganic tin alternatives would include REAXIS® C125 (Stannous Neodecanoate) and REAXIS® C129 (Stannous Octoate). All the above-mentioned products are neat liquids with varying metal content and ligand makeup. Dioctyltin Dineodecanoate is present on most global chemical inventory lists.
Technical Information
- Product Category Organotin
- Chemical Name Dioctyltin Dineodecanoate
- CAS Number 68299-15-0
Typical Specifications
| Parameter | Range |
|---|---|
| Tin Content (%) | 15.7 - 17.5 |
| Density (g/ml) | 1.01 - 1.05 |
| Viscosity (cP @ 20°C) | 150 - 250 |
| Color (Gardner Number) | 2 Max |
International Regulatory Listings
- TSCA (US) Yes
- DSL (Canada) Yes
- REACH (EU) No
- AICS (Australia) Yes
- KECI (South Korea) Yes
- IECSC (China) Yes
- ENCS (Japan) Yes
- TCSI (Taiwan) Yes
- PICCS (The Philippines) Yes
- NDSL (Canada) No
- NZloC (New Zealand) No
Applications
Dioctyltin Dineodecanoate and its alternatives can be used as a homogenous tin catalyst in a wide spectrum of polyurethane and silicone applications including adhesives and sealants, elastomers and plastics, and coatings. Silicone-based applications include: acetoxy-, ethoxy- and oxime-based Room Temperature Vulcanizing (RTV) adhesives and sealants, polyethylene crosslinked silanes (PEX), and select silane-modified polymers (SMPs).
Dioctyltin Dineodecanoate and its analogues are preferentially used in formulations with oxime functionality. Regarding polyurethane applications, Dioctyltin Dineodecanoate can be used for most related applications including coatings, adhesives and sealants, elastomers, and foams. Dioctyltin Dineodecanoate is used in formulations utilizing either aliphatic or aromatic isocyanates and a wide range of polyether and polyester-based polyols.
Reactivity
Due to the larger alkyl group, steric effects, and lower active tin metal content, REAXIS® C318 is expected to be slower in reactivity compared to its butyl and methyl analogues, REAXIS® C221 and REAXIS® C325, respectively. Reactivity difference is evidenced in both polyurethane and silicone chemistries across all applications. In regard to silicone reactions, REAXIS® C318, like all tin-based catalysts, will catalyze the silanol/silane condensation reaction, acting as both a polymerization and crosslinking catalyst. As a polyurethane catalyst, REAXIS® C318, will preferentially catalyze the urethane reaction and, to a lesser extent, the water reaction, acting as a polymerization/gelation catalyst.
Package & Storage
- 44 lb (20 kg) plastic pail
- 440 lb (200 kg) plastic drum
REAXIS® C318 should be stored in the original packaging at moderate temperatures and kept from freezing. The container should be closed tightly after each use to maximize shelf life. Characteristic of most Sn (IV) organotins, the primary cause of instability would be hydrolysis. Hydrolysis results in the formation of tin oxide insolubles leading to deactivation of REAXIS® C318.
Safety and Handling
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Hazard Classification (US SDS)
| Section | Hazard Class | Category | Hazard Statement |
|---|---|---|---|
| A.8 | specific target organ toxicity - single exposure | 2 | H371 |
Hazard Pictograms (US SDS)
Transportation Information (US SDS)
| DOT | IMDG | ICAO | Environment Hazard | |
|---|---|---|---|---|
| UN Number | not subject to transport regulations | not subject to transport regulations | not subject to transport regulations | non-environmentally hazardous acc. to the dangerous goods regulations |
| UN Proper Shipping Name | not relevant | not relevant | not relevant | |
| Transport Class | none | none | none | |
| Packing Group | not assigned | not assigned | not assigned | |
Primary Composition Substance(s)
- Bis(neodecanoyloxy)dioctylstannane
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This information is provided to the best of our knowledge but without obligation. Reaxis is not liable for any incorrect or missing information. This data sheet becomes invalid upon publication of a new version. Please contact us for the latest version.
