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sodium metabisulfite 7681-57-4
Category : Intermediates
CAS NO : 7681-57-4 EC NO : 231-673-0 MF : Na2S2O5 MW : 190.1065 Specification : EINECS: 231-673-0 Product description : Specifications Sodium Metabisulfite food and inudstry grade 96%,97%,98% CAS : 7681-57-4 EINECS: 231-673-0 MF: Na2O5S2 MW: 190.1065 Appearance:White or light yellow crystalline powder Specification: ITEM Industrial grade Food grade Assay: 96% min 96% min SO2 content 65% min 65% min Iron: 0.005% max 0.005% max Heavy metals (as Pb) -- 0.002% max Arsenic -- 0.0002% max pH 4.0-4.6 4.0-4.6 Water insoluble: 0.05% max 0.05% max Main uses: Food grade: Bleach agent (e.g.candies, cake, bamboo shoots, etc); Loose agent (e.g.bread, cracker etc); Antiseptic and germicide (e.g.fruit juice, tinned food brews, the cereals food is defended storage etc); Inhibitor and freshen agent (e.g.day lily, seafood, fruit and vegetable etc) Industrial grade: Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of stapk; Treatment agent of waste water; Rubber solidifying agent Perfume industry is served as hydrocarbon perfume aldehyde The hide profession employ to do to molt dose and pliable dose and wearproof dose The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose and so on; sewage treatment. Packaging:in polythene plastic bag with a polypropylene overbag, paper-plastic composite bag, kraft bag, etc. Synonyms : Sodium pyrosulfite;disodium disulphite;Sodium metabisulphite;Sodium disulphite;Sodium pyrosulphite;SODIUM DISULFITE;disodium oxidosulfanesulfonate oxide;Sodium Metabi;Metabisulfite Sodium;Sodium Metabisulfite (Food Grade); Molecular Structure : 
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sodium metabisulfite