Reaxis® C248D - Dibutyltin Oxide/ Plasticizer Blend
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REAXIS® C248D (Dibutyltin Oxide + Plasticizer) is a liquid version of dibutyltin oxide (DBTO) containing a phthalate-based plasticizer. REAXIS® C248D contains 50% of the active tin catalyst content compared to the solid version of DBTO, REAXIS® C248. Other liquid versions using phthalates and non-phthalates as the diluent include REAXIS® C248DP and REAXIS® C248DN (“phthalate-free” version). Liquid versions of DBTO-based silanes include REAXIS® C248VM and REAXIS® C248T. Other liquid grades of dibutyltin oxide are also available upon request.
Technical Information
- Product Category Organotin
- Chemical Name Dibutyltin Oxide/ Plasticizer Blend
- CAS Number 818-08-6
Typical Specifications
| Parameter | Range |
|---|---|
| Tin Content (%) | 23.0 - 25.0 |
| Refractive Index (nD @20°C) | 1.5028 - 1.5109 |
| Density (g/ml) | 1.160 - 1.220 |
| Color (Gardner Number) | 4 |
International Regulatory Listings
- TSCA (US) Yes
- DSL (Canada) Yes
- AICS (Australia) Yes
- KECI (South Korea) Yes
- IECSC (China) Yes
- ENCS (Japan) Yes
- TCSI (Taiwan) Yes
- NZloC (New Zealand) Yes
- PICCS (The Philippines) Yes
- REACH (EU) No
- NDSL (Canada) No
Applications
REAXIS® C248D and its alternatives can be used as a homogeneous catalyst in a wide spectrum of silicone and polyurethane applications including adhesives & sealants, and elastomers. 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). In regard to polyurethanes, REAXIS® C248D is typically used in adhesive, sealant, or elastomer formulations given the presence of a plasticizer.
Reactivity
Given its high tin content, liquid form, and good compatibility with a wide range of raw materials, REAXIS® C248D tends to be a highly reactive catalyst across a broad range of silicone and polyurethane formulations. In regard to silicone reactions, REAXIS® C248D, like all tin-based catalysts, will catalyze the silanol/silane condensation reaction thus acting as both a polymerization and crosslinking catalyst. Typical of the organotin family of catalysts, REAXIS® C248D will catalyze most polyurethane reactions; it is primarily selective toward the polyol-isocyanate and water-isocyanate reactions. REAXIS® C248D is hydrolytically stable within typical formulation moisture levels, but this stability will break down with increasing moisture content.
Package & Storage
- 44 lb (20 kg) pails
- 485 lb (220 kg) drums
- 2425 lb (1100 kg) IBC
REAXIS® C248D should be stored in the original packaging. The container should be closed tightly after each use to maximize shelf life.
Safety and Handling
Hazard Classification (US SDS)
| Section | Hazard Class | Category | Hazard Statement |
|---|---|---|---|
| A.10 | acute toxicity (oral) 4 Acute | 4 | H302 |
| A.2 | skin corrosion/irritation | 2 | H315 |
| A.3 | serious eye damage/eye irritation | 1 | H318 |
| A.4S | skin sensitization | 1 | H317 |
| A.5 | germ cell mutagenicity | 2 | H341 |
| A.6 | carcinogenicity | 2 | H351 |
| A.7 | reproductive toxicity | 1B | H360FD |
| A.8 | specific target organ toxicity - single exposure | 1 | H370 |
| A.9 | specific target organ toxicity - repeated exposure | 1 | H372 |
Hazard Pictograms (US SDS)
Transportation Information (US SDS)
| DOT | IMDG | ICAO | Environment Hazard | |
|---|---|---|---|---|
| UN Number | UN 3082 | UN 3082 | UN 3082 | yes (hazardous to the aquatic environment) |
| UN Proper Shipping Name | Environmentally hazardous substance, liquid, n.o.s. | ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S. | Environmentally hazardous substance, liquid, n.o.s. | |
| Transport Class | 9 | 9 | 9 | |
| Packing Group | lll | lll | lll | |
Primary Composition Substance(s)
- dibutyl tin oxide
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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.
