Used as a reducing agent in textile dyeing processes, particularly in vat and sulfur dyeing, where it helps convert insoluble dyes into water-soluble forms for fabric absorption. Also employed in organic synthesis for dehalogenation and reductive cleavage reactions. Commonly found in polymer chemistry to initiate radical reactions. Applied in water treatment for removing chlorine and other oxidizing agents. Utilized in the production of fine chemicals and pharmaceuticals due to its selective reduction properties. Stable and effective under alkaline conditions, making it suitable for use in high-pH environments.