... day lily, seafood, fruit and vegetable etc). 2) Sodium Metabisulfite Industry Grade: Mordant of printing and dyeing; Dechlorinate of textile ... 0-4.8 / 4.0-4.8 Uses:3) Sodium Metabisulfite Pharmaceutical Grade: In chemical synthesis in the production of ... vitamin K, vitamin A, pharmaceutical intermediates, etc.4) Sodium Metabisulfite Photo Grade: The sensitize industry is served as the developing ...