Sodium Bisulfite:
Alias:Sodium hydrogen sulfite
English name:Sodium Bisulfite
Molecular formula:NaHSO3
Molecular weight:104.06
Properties:It is white oblique crystal powder with the odor of sulfur dioxide. Density: 1.49; Dissolving in water, slight dissolving in alcohol; It decomposes in heating and has well reducibility; It is easy to be oxidized in the air or lose sulfur dioxide. It always contains sodium metabisulfite of various scales.
Quality standard: HG/T 3814-2006

Item	Index
Main content(SO2)               %	64.0-67.0
Water-insoluble                ≤      %	0.03
Chloride(Cl)          ≤      %	0.05
Iron(Fe)                  ≤      %	0.004
Heavy metal(Pb)          ≤      %	0.001
Arsenic(As)                  ≤      %	0.0002
PH value(50g/L solution)	4.0-5.0

Use:It is used in the bleaching of cotton fabric, and used for reducer in the industries, such as dyeing, paper-making, tanning, chemical synthesis, etc. It also can be used for medicine intermediate, photographic developer, food bleacher, preservative, antioxidant, etc.
Packing:25, 50, 1000kg/bag or customized in polypropylene woven bag lined with polyethylene plastic bag or plastic and paper compound bag, kraft bag, etc.