... price &Good service 4.Prompt delivery Specification of the Sodium metabisulphite1,Molecular formula : Na2S2O52,Molecular weight : 190 ... light yellow crystalline powder4,Main content :96.5%min 5,Competitive price, Pass ISO 6,Annuual ... thickness ≥0.05mm. There are "food additives Sodium metabisulfite" printed on the external packing, with the ... Chemical Co.,Ltd. 96.5% min Sodium metabisulfite (SM158)