Reaxis® C739W50 - Water Soluble Bismuth Complex
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REAXIS® C739W50 is a proprietary bismuth catalyst that is primarily used in polyurethane applications. As a bismuth catalyst, REAXIS® C739W50 is unique in that it is both non-carboxylate and water soluble, which differentiates it from the more common bismuth complexes and carboxylates such as REAXIS® C716 (Bismuth Neodecanoate) and REAXIS® C3210 (Bismuth Octoate). REAXIS® C739W50 is provided as a 50% active bismuth catalyst in 50% water. Its main use is in waterborne formulation. REAXIS® C739W50 can be provided in a wide range of alternative non-aqueous diluents such as ethylene glycol and PEG, and can be offered as REAXIS® C739E50 and REAXIS® C739P50, respectively. REAXIS® C739W50 is present on the US TSCA chemical inventory.
For more information, we invite you to read our technical bulletins on Novel Bismuth Complexes for Polyurethane Catalysis and Strategies for Improving Back-End Reactivity of Bismuth Carboxylate Catalysts.
Technical Information
- Product Category Bismuth
- Chemical Name Water Soluble Bismuth Complex
Typical Specifications
| Parameter | Range |
|---|---|
| Bismuth Content (%) | 18.5 - 20.5 |
| Color (Gardner Number) | 12 Max |
| Density (g/ml) | 1.3 - 1.5 |
International Regulatory Listings
- TSCA (US) Yes
- DSL (Canada) No
- NDSL (Canada) No
- REACH (EU) No
- AICS (Australia) No
- KECI (South Korea) No
- IECSC (China) No
- ENCS (Japan) No
- TCSI (Taiwan) No
- NZloC (New Zealand) No
- PICCS (The Philippines) No
Applications
Like most bismuth-based products, REAXIS® C739W50 is commonly used in polyurethane applications. It is used in a wide range of polyurethane applications including coatings, adhesives and sealants, foams, plastics and elastomers. This water soluble bismuth complex is used in applications where toxicity (when compared with organotins), water solubility and shelf-life issues are priorities and are paramount. In addition to use as a bismuth catalyst for polyurethanes, REAXIS® C739W50 is ideal for water-based lubricant formulations.
Reactivity
Although REAXIS® C739W50 has a different chemical make-up compared to the traditional bismuth carboxylates, it does exhibit a similar, bismuth-like reactivity profile. The use of REAXIS® C739W50 as a polyurethane catalyst results in good overall reactivity. A well-balanced cure is achievable, given the presence of both a lower bismuth metal content and ligand characteristics. Thus, a balanced front-end/pot-life and back-end/ final cure reactivity profile can be achieved through the use of this bismuth catalyst. Reactivity, especially in regard to back-end cure, is greatly improved with the addition of added and exothermically generated heat. Typical of the bismuth catalysts in general, REAXIS® C739W50 will catalyze most polyurethanes reactions and is somewhat similar in reactivity to tin-based catalysts; it is primarily selective toward the polyol-isocyanate and water-isocyanate reactions. In addition to its enhanced water stability, REAXIS® C739W50 will impart a longer polyol-side shelf-life compared to bismuth carboxylates.
Package & Storage
- 44 lb (20 kg) plastic pail
- 440 lb (200 kg) drums
REAXIS® C739W50 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.
Safety and Handling
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Technical Bulletins
Hazard Classification (US SDS)
| Section | Hazard Class | Category | Hazard Statement |
|---|---|---|---|
| A.2 | skin corrosion/irritation | 2 | H315 |
| A.3 | serious eye damage/eye irritation | 2 | H319 |
| A.4S | skin sensitization | 1 | H317 |
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)
- 1,2-propanediol, 3- mercapto-bismuth
Alternative Product(s) to Consider
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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.
