China 96% Sodium Sulfite Anhydrous, Na2so3, Used in Artificial Fiber Stabilizer, Fabric Bleach, Photographic, Find details about China Sodium Sulphite, Sodium Sulfite from 96% Sodium Sulfite Anhydrous, Na2so3, Used in Artificial Fiber Stabilizer, Fabric Bleach, Photographic
ITEMS | Premium grade | ||
Super grade | First grade | Salable product | |
Sodium sulfite ( Na2SO3 ) , % ≥ | 97.0 | 96.0 | 95.0 |
Fe , ≤ | 0.003 | 0.005 | 0.01 |
Water insoluble matter , % ≤ | 0.02 | 0.03 | 0.05 |
Free alkali ( as Na2SO3 ) , % ≤ | 0.10 | 0.40 | 0.60 |
Na2SO4 , % ≤ | 2.50 | / | / |
NaCl , % ≤ | 0.10 | / | / |