Used as a reducing agent in chemical synthesis, including the production of silver mirrors via Tollens' reagent, electroless plating of metals, and reduction of nitro groups to amines. Serves as a catalyst in organic reactions, such as variants of the Sandmeyer reaction.

Employed in the textile industry as a mordant to fix dyes to fabrics, particularly anthraquinone dyes, improving color fastness.

Applied in metal coating processes, such as tin plating for corrosion protection, and in the production of reflective mirrors for uniform tin deposition.

Acts as a stabilizer in polymer systems and in the manufacturing of catalysts for organic reactions. Used in the preparation of other tin compounds.

In analytical chemistry, employed for the qualitative detection of gold, mercury, and arsenic.

In electronics, utilized as a precursor for conductive thin films and in surface chemistry treatments for ceramics and coatings.

Also used in the food industry as a color stabilizer (E512) in canned fruits and vegetables.