Thiourea dioxide, also known as formamidinesulfinic acid or aminoiminomethanesulfinic acid, is a white, crystalline powder soluble in water, used primarily as a reducing agent in various industries:
- Textile Industry: Used as a reducing agent for vat dyes and for bleaching and stripping colors.
- Paper Industry: Used as a bleaching agent for pulp.
- Leather Industry: Used in leather processing to remove unwanted dyes and to improve the quality of leather.
- Photography: Used as a reducing agent in photographic processes.