Tin(II) 2-ethylhexanoate
Tin 2-ethylhexanoate or tin octoate or stannous octoate is the octaoate or 2-ethylhexanoate salt of tin. Produced by the reaction of tin(II) oxide and 2-ethylhexanoic acid, it is a clear colorless liquid at room temperature, though often appears yellow due to impurities, likely resulting from oxidation of Sn to Sn.
It is sometimes used as a catalyst for ring-opening polymerization, such as for the production of polylactic acid.