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Zhengzhou Macro Imp. & Exp. Co., Ltd.
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high purity chemical anhydrous sodium sulphite(Na2SO3) for bleach
Appearance: white crystal or powder
Density (g/cm3): 1.561
Solubility: Soluble in water, water solution is alkaline. indissolvable in ethanol
Specification:
ITEMS | Premium grade | ||
| Super grade | First grade | Salable product |
Sodium sulfite ( Na2SO3 ) , % ≥ | 97.0 | 96.0 | 93.0 |
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 | / | / |
Packing:25kg/pp bag or per customer's request
Application:Used in artificial fiber stabilizer, fabric bleach, photographic contrast extravasation, dye bleaching deoxidizer, spices and dye reductant, paper lignin removal agent.