Widely used as a reducing agent in chemical synthesis, particularly in the production of other tin compounds and in electroless plating processes. It serves as a catalyst in the manufacturing of polylactic acid (PLA), a biodegradable polymer used in plastics and textiles. Commonly employed in the textile industry as a mordant in dyeing, improving color fastness and helping dyes adhere to fabrics. Used in the silvering of mirrors and glass coatings, where it helps deposit a uniform metallic layer. Found in some oral care products, such as toothpaste for sensitive teeth, where it helps block dentinal tubules and reduce sensitivity. Also utilized in analytical chemistry for qualitative detection of gold, mercury, and other metals due to its ability to reduce metal ions to their metallic form.