Reaxis®  C739W50

REAXIS® C739W50 is a hydrolytically stable catalyst used for curing waterborne polyurethane systems. REAXIS® C739W50 exhibits a high selectivity for the NCO/OH reaction, leading to improved physical property development. REAXIS® C739W50 is supplied as a 50% active catalyst in water. REAXIS® C739W50 can be supplied in other diluents.

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.

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Technical Information

  • 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

Package & Storage


  • 44 lb (20 kg) plastic pail


REAXIS® C739W50 should be stored in the original packaging. The container should be closed tightly after each use to maximize product shelf life. The material should be stored so as to prevent freezing.

Safety and Handling

Before use of Reaxis products please refer to the relevant Safety Data Sheet (SDS) for safety and toxicological data as well as for the information on proper transportation, storage, and use. SDSs are available by request via our web site, contacting your local representative, or emailing direct to

Featured Technical Bulletins

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.

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