Hydroxylamine sulfate is widely used in the synthesis of pharmaceuticals, particularly in the production of oximes, which are intermediates for various drugs. It serves as a reducing agent in organic chemistry, facilitating the conversion of nitro compounds to amines. In the photographic industry, it is employed as a stabilizer for color developers. Additionally, it acts as a corrosion inhibitor in water treatment processes, protecting metal surfaces from degradation. In analytical chemistry, it is utilized for the determination of aldehydes and ketones through derivatization. Its role in the production of nylon intermediates further highlights its industrial significance.