Name: Sodium metabisulphite

Spec:                Fooddegree             Industrydegree

Na2S2O5            98%min                    96%min

SO2                         65%min                    65%min

As                     0.0002% max

Fe                     0.001%max              0.005%max

Water insoluble    0.02%max              0.05% max

Use:Dyeing mordant, dechlorinating agent for washed fabric,medical deoxidizer and sulfonating agent, bone black for bamboo,wood and paper fiber, non-ferrous mineral separation agent, wastewater disposing agent, rubber coagulator.