Sodium metabisulfite 1.Both food & tech grade 2.Steady high quality 3.Nicest price &Good service 4.Prompt delivery Specification of the Sodium metabisulphite1,Molecular formula : Na2S2O52,Molecular weight : 190.103,Appearance : white or light yellow crystalline powder4,Main content :96.5%min 5,Competitive price, Pass ISO 6,Annuual production:20,000mt Quality standard : GB1893-1998Item Company ...