Complaint
Sodium Metabisulfite is a white or yellow crystalline powder or small crystal, with sulfurous acid odor, the proportion of 1.4, soluble in water. Sodium pyrophosphate can not be stored for a long time, and the packaging should be sealed to prevent air oxidation. Soluble in water soluble in glycerin, slightly soluble in ethanol. Moisture easily decomposed, exposed to the air easily oxidized into sodium sulfate.
ITEM | INDUSTRIAL GRADE | FOOD GRADE |
Content(as SO2) | 65% | 65% |
Water-insoluble Matter | 0.05% | 0.05% |
0.0030.003Iron(Fe) | 0.003 | 0.003 |
PH | 4-4.6 | 4-4.6 |
As | 0.0002 | |
Lead(Pb) | 0.002 |
1.The Industrial grade:can be used as the printing and dyeing mordant; fabric bleaching dechlorination agent.
2.It Can be used as Bamboo, wood, paper fiber bleach.
3.It can be used as Non-ferrous metal ore dressing agent.
4.It Can be used as Wastewater treatment agent; rubber coagulant.
5.In The perfume industry is used as a hydrocarbon-based perfume aldehyde.
6.Used in the leather industry as a depilatory, softener and anti-wear agent.
7.In Photosensitive industry can be used as a reducing agent for developers, a protective agent for fixing solution.
8 The food grade sodium metabisulfite can be used in food processing as the food additives.
