Sodium Metabisulphite

Molecular Formula: Na5P3O10Appearance: White PowerSpecification:

Items	Industrial Grade	Food Grade
Na5P3O10	94.0%Min	94.0%Min
P2O 5	57.0%Min	57.0%Min
Water Insoluble Matter	0.15%Max	0.04%Max
Iron(Fe)	0.015%Max	0.006%Max
PH value (1% water solution)	9.2-10.0	9.5-10.0
Heavy Metal (as Pb)	-	0.001%Max
Arsenic (As)	-	0.0003%Max
Fluoride (F)	-	0.003%Max
Whiteness	92%Min	92%Min
Ignition loss	1.0	-
density (g/cm3)	0.35-0.9	0.35-0.9

Application: It is mainly used as auxiliaries for synthetic detergent, synergist for soap; softener for water; mordants for leather; auxiliary for dyeing; and the dispersion for kaolin, Magnesium oxide, calcium carbonate and drilling mud etc. It is used as oil contamination resistance agent in paper production. In food-stuff industry, it is used as quality improver for canne:d food, fruit juice drinks, dairy products and soybeans. It also used for the tender of canned ham and the softer of the bean in canned bean, it is used as softener or densifier.