Items	Index
NaNO2 content%	≥99.0
NaNO3 content %	≤0.80
Chloride content %	≤0.10
Moisture %	≤1.8
Water insoluble %	≤0.05

Application fields: used for fabric dyeing mordant; silk, linen bleaching agent metal heat treatment agent; steel corrosion inhibitor; cyanide poisoning antidote, laboratory analysis reagent, used as chromogenic agent, anti microbial agents in meat products processing, preservatives etc.