| 摘要 |
Anhydrous compsn. comprising a major amount of a metallic dithionite and a non-polymeric surfactant contg. >=5C and >=1 group of formula O-CO-N in which the uncombined valencies are attached to O, H and C atoms is used as a bleaching agent, reducing agent for dyes and a dye remover in the textile and paper-making industries. |
