REAXIS® C125 (Stannous Neodecanoate), also commonly known as Tin bis-(neodecanoate) or Tin Neodecanoate, is an inorganic tin carboxylate with a moderate metal content. REAXIS® C125 is an ideal candidate when looking for alternatives for organotins, such as REAXIS® C218 (Dibutyl Tin Dilaurate) and REAXIS® C248 (Dibutyl Tin Oxide), used as a homogenous catalyst in polyurethane, silicone, and esterification applications. Given its inorganic tin nature, REAXIS® C125 can be used in high- temperature applications. Tin NeodecanoateThe C125 is typically supplied in a neat form with excess free acid typically in higher concentrations compared to REAXIS® C129 (Stannous Octoate). REAXIS® C125 is stable with various diluents including plasticizers, polyols, esters, and mineral oils. Similar inorganic tin products would be REAXIS® C129, and REAXIS® C114 (Stannous Oleate).
|Stannous Tin (%)||20.0 - 23.0|
|Viscosity (cP @ 20°C)||5000 Max|
|Turbidity (NTU)||30 Max|
|Color (Gardner Number)||8 Max|
REAXIS® C125 is a good candidate for any of the mentioned chemistries and applications. Similar to organotins, inorganics tins are more selective to NCO/OH reactions and are thus good gelation/polymerizations catalysts. REAXIS® C125 has proven to be a viable replacement for other inorganic tin carboxylates such as REAXIS® C129 in a wide range of polyurethane applications. For catalyzing silicone condensations, REAXIS® C125 exhibits faster reactivity, compared to REAXIS® C218 in select acetoxy- and alkoxy-based formulations. In regard to stability, inorganic tins like REAXIS® C125 do show a greater sensitivity to oxidation degradation compared to say organotins. This latter effect is due to the presence of the Sn(II) species present in all inorganic tin products. Depending on the formulation, REAXIS® C125 can provide for increased hydrolytic stability compared to REAXIS® C129 due the presence of a larger ligand in the former product.
REAXIS® C125 should be stored in the original packaging. The container should be closed tightly after each use to maximize shelf life. Characteristic of most inorganic tins (Sn(II)), the primary cause of instability would be oxidation.