After-sale Service
1.We are very glad that customer give us some suggestion for price and products.
2.If any question, please contact with us freely by E-mail or Telephone.
Item | Quality Index | ||
Food Grade Sodium Sulfite | Industry Grade Sodium Sulfite | ||
Purity (As Na2SO3) | 98.0% min | 96.0% min | |
Sodium sulphate (SO4) | 1.0% max | 2.0% max | |
Chlorides (As NaCl) | 0.1% max | 0.5% max | |
Arsenic (As) | 0.0002% max | - | |
Heavy metals(As Pb) | 0.0005% max | - | |
Iron (Fe) | 0.002% max | 0.005% max | |
Water insolubles | 0.02% max | 0.05% max |