REAXIS® C160 (Stannous Oxalate or Tin(II) Oxalate) is a high metal content inorganic tin catalyst that is used in a wide range of esterification reactions. Tin(II) Oxalate is an ideal alternative for commonly used organotin catalysts such as REAXIS® C248 (Dibutyltin Oxide) and monobutyltin oxide. REAXIS® C160 has a lower toxicity profile compared to organotins. REAXIS® C160 is supplied as a free-flowing white solid with a narrow particle size distribution range and low moisture content. Similar inorganic tin products to REAXIS® C160 include, REAXIS® C162 (Stannous Chloride Anhydrous), REAXIS® C129 (Stannous Octoate), and REAXIS® C125 (Stannous Neodecanoate).
|Stannous Tin (%)
|55.5 - 57.5
|Tin (IV) Content (%)
|Loss On Drying (%)
REAXIS® C160 is primarily used as a catalyst for synthesizing various monomeric and polymeric ester-based products such as nonionic surfactants, polyester polyols, and plasticizers. Typical end-use markets for REAXIS® C160 include plastics, coatings, and personal care. Its inorganic tin nature makes it an ideal catalyst for applications demanding the use of low-toxicity raw materials.
Due to its high tin concentration and small ligand, REAXIS® C160 (Stannous Oxalate) is a very active esterification catalyst with comparable reactivity to common organotin catalysts such as dibutyl and monobutyl tin oxides. Given its inorganic nature, REAXIS® C160 is stable at high reaction temperatures typical of many esterification reactions. Also, the use of REAXIS® C160 can result in final ester products with low color.
REAXIS® C160 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.