REAXIS® C154 (Stannous Chloride Dihydrate) also known as SnCl2 is a versatile high metal content inorganic stannous tin that is used in several reactions. REAXIS® C154 is produced to the highest standards, meeting A.C.S. specifications. REAXIS® C154 is a solid version of stannous chloride dihydrate. Stability/free-flowability of this tin chloride can be enhanced via blends with various products including silica, talc, and numerous solid resins. Stannous chloride dihydrate can also be supplied as a liquid in various concentrations, including REAXIS® S50. REAXIS® S45, and REAXIS® S72.
|Assay as SnCl2·2H2O (%)||99.2 - 103.0|
|Stannous Tin (%)||52.2 Min.|
|Fe (ppm)||30 Max.|
|Pb (ppm)||100 Max.|
|Na Content (ppm)||100 Max.|
|K Content (ppm)||50 Max.|
|Ca Content (ppm)||50 Max.|
|Sulfates (ppm)||Passes A.C.S. Test|
|Solubility in HCl||Passes A.C.S. Test|
Common end-use chemistries and applications for REAXIS® C154 include: esterifications, thermoplastic elastomers, personal care, surface finishing, oil well simulation (acidizing additive), corrosion inhibition, and glass (silver mirroring and color modifier). As a catalyst, REAXIS® C154 plays a crucial role in the esterification process, which is fundamental to the production of various esters. Stannous chloride dihydrate, as a reducing agent, finds diverse applications and benefits in various industries. In electroplating, it serves as a primary reducing agent to deposit metal layers, such as silver or tin, onto substrates. By donating electrons, REAXIS® C154, stannous chloride dihydrate, reduces the metal ions to their corresponding metallic forms, which adhere to the substrate’s surface. This process results in a uniform, thin coating that improves the final product’s appearance, durability, and corrosion resistance.
Due to its high tin concentration and small ligand, REAXIS® C154 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® C154 is stable at high reaction temperatures typical of many esterification reactions. Due to the presence of chlorides, color formation may be an issue with some ester formulations. If the presence of residual moisture in REAXIS® C154 is deemed an issue with the catalysis of esters, REAXIS® C162 would be an ideal, moisture-free alternative.
REAXIS® C154 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. Additionally, REAXIS® C154 has a low melting point (38C)and is hygroscopic.