Hydroxylamine hydrochloride is white acicular crystal, easy to deliquescence, soluble in water, ethanol and glycerol, insoluble in ether. Hydroxylamine hydrochloride is an important organic chemical intermediate, which is mainly used in the preparation of oxime in organic synthesis, such as the intermediate of sulfamethoxazole in pharmaceutical industry and the intermediate of indigo in synthetic dye industry. As hydroxylamine hydrochloride has good reducing effect, it is often used as reducing agent in industry, such as antioxidant and antioxidant of fatty acid and soap in oil industry.