Product Name: Food Additives Sodium metabisulfite Model NO.: Food Grade Grade Standard: Food Grade Type: Sodium Sulfide Purity: 90%~99% Certification: CCIC, CIQ, RoHS, ISO Classification: HS Appearance: Powder CAS No.: 7681-57-4 Molecular Formula: Na2s2o5 Molecular Weight: 190.10 Appreance: White or Light Yellow Crystalline Powder Application: Bleach Agent e.g.Candies, Cake, Bamboo Shoots, etc Trademark: Haitong Transport Package: 25kg/1000kg Net In Plastic Woven Bag With PE Liner Origin: China HS Code: 2831102000 Product Description Product Name: Sodium metabisulfiteCAS No.: 7681-57-4H. S Code: 2831102000Molecular weight: 190.10Appearance: White crystalline powder, free from extraneous matter with a faint odour of sulphur dioxide gas...Package: 25kg / 1000kg net in the plastic woven bag with PE liner.Application: Used as a food preservative. It is a slight hazy solution free from inappropriate impurities. These sulphites are available in white and faint cream crystalline free flowing powder and are widely used in photographic chemical and preservative chemical.Used in medicine when producing chloroform,solasulfone and methnylal;used as coagulant in rubber industry; used as dechlorided agent or assistants in printing and dyeing industry; used to improve leather properties in leather industry; used as developing agent in photosensitivity industry; used when producing hydroxyl geranial, hydrochloric hydroxylamine in chemical industry; used as bleaching agent, antiseptics, antioxidant, ect.in food industry.Specification:ItemsTechnical gradeFood gradeAssay96% min97% minAssay as SO265% min65% minWater insoluble0.05% max0.05% maxFerric (Fe)0.003% max0.003% maxpH value4.0-4.64.0-4.6Lead (Pb)**0.002% maxArsenic (As)**0.0002% max