Used primarily in agriculture as a source of sulfur and potassium in fertigation and foliar feeding, especially in chloride-sensitive crops. It enhances sulfur nutrition, which is vital for protein synthesis and enzyme activity in plants. Commonly applied in high-value crops like fruits, vegetables, and nuts. Also serves as an antichlor in textile processing, removing residual chlorine after bleaching. Used in some photographic processes to fix images by dissolving unexposed silver halides. In environmental applications, it acts as a dechlorinating agent in water treatment. Its low salt index makes it suitable for use in sensitive irrigation systems.