... price &Good service 4.Prompt delivery Specification of the Anhydrous Sodium Sulfite1,Molecular formula : Na2SO32,Molecular weight : 126.043, ... Appearance : white crystalline powder4,Main content :97%,96%,93%5,Competitive price,6,Pass ISO, producing under ... Super gradeFirst gradeSalable productIndustrial gradeSodium sulfite ( Na2SO3 ) , % ≥97.096.093.090.0Fe , ?≤0.0030.0050.01/Water insoluble ...