TIB CHEMICALS CORPORATION › REAXIS® C 129 REAXIS® C 129 $0.00 REAXIS® C129, Stannous Octoate, is a metal-based homogenous stannous tin catalyst that is used in a number of application chemistries. Quantity: Add To Cart Added! REAXIS® C129, Stannous Octoate, is a metal-based homogenous stannous tin catalyst that is used in a number of application chemistries.