China Sodium Metabisulfite for Food Use, Find details about China Chemical, Food Additive from Sodium Metabisulfite for Food Use
Item | Food Grade | Industry Grade |
Purity ( As Na2S2O5) | 98.0% min | 96.0% min |
Sulfur Dioxide( SO2) | 65.0% min | 65.0% min |
Arsenic ( As ) | 0.0002% max | - |
Heavy metals ( As Pb ) | 0.0005% max | - |
Selenium (Se ) | 0.0005% max | - |
Iron (Fe) | 0.001% max | 0.002% max |
Water insoluble | 0.02% max | 0.05% max |
PH value : | 4.0-4.8 | 4.0-4.8 |
Remark : | Conformed with FCCV and E223 Standard |
Item | Pharmaceutical Grade | Photo Grade |
Purity ( As Na2S2O5) | 98.0% min | 98.0% min |
Sulfur Dioxide( SO2) | 65.0% min | 65.0% min |
Thiosulphate ( As S2O3) | 0.05 % max | 0.05% max |
Chloride ( As CL-) | 30 ppm max | 50ppm max |
Arsenic ( As ) | 1ppm max | 1ppm max |
Lead ( Pb ) | 1 ppm max | 2ppm max |
Copper (Cu) | 1 ppm max | 1ppm max |
Iron (Fe ) | 5 ppm max | 5ppm max |
Mercury (Hg) | 0.1ppm max | 1ppm max |
Chromium (Cr) | 1 ppm max | - |
Selenium (Se ) | 1 ppm max | 5ppm max |
Zinc (Zn) | 1 ppm max | 1ppm max |
Cadmium (Cd ) | 1ppm max | - |
Nickel (Ni) | 1ppm max | - |
Na2SO3 + Na2SO4 | 1.5% max | - |
PH value : | 4.0-4.8 | 4.0-4.8 |
Remark : | Conformed with USP standard |