Used in the production of specialty chemicals, particularly in the synthesis of organic sulfur compounds. Acts as a reducing agent in various chemical reactions, aiding in the conversion of certain compounds. Employed in the leather industry for the removal of hair from hides during the tanning process. Utilized in analytical chemistry as a reagent for detecting specific metal ions. Plays a role in the manufacturing of certain types of dyes and pigments. Also finds application in the creation of luminous paints and coatings due to its properties.