sodium metabisulfite

Sodium Metabisulphite For Industrial UseMolecular Formula:Na2S2O5 Molecule Weight:190.10 Appearance:white or light yellow crystalline powder. Quality standard:HG/T28261997 CAS 7681-57-4 Test Item Standard Request.Results of TestIndividual ResultAppearance White or light yellowcrystalline powderMeet the demandPassContent(Na2S2O5%)≥95%97.26%PassSO2%65%65.55%PassFe%≤0.005%0.003%PassInsoluble substancein water%≤0.05%0.01%PassHeavy metal (Pb)%≤0.002%0.001%PassAs%≤0.0002%<0.0001%PassPH4.0-4.64.3Pass Packing: in polythene plastic bag with a polypropylene overbag, paper-plastic composite bag, kraft bag, etc. Net weght: 25,50,1000 kilograms per bag or following your demand. We welcome your orders for bromide products, magnesium chloride, industrial crude salt and bittern serial chemicals.