... No.:7681-57-4 Molecular Weight:190.09 Synonyms: Sodium pyro Application:Sodium Metabisulphite Industrial Grade Mordant of printing and dyeing; Dechlorinate ... agent of waste water; Rubber solidifying agent, and so on. Sodium Metabisulphite food grade Bleach agent (e. G. Candies, cake, bamboo ... agent (e. G. Day lily, seafood, fruit and vegetable etc) Sodium Metabisulphite