Specific indexes:

Special specification of Potassium Nitrite :

Content: 94.0%	Potassium carbonate: 0.15%
Insoluble substance in water: 0.01%	Potassium chloride: 0.05%
Iron(Fe): 0.003%	Potassium hydroxide: 0.05%
Potassium sulfate: 0.02%

Common specification:

Content: 97%	Chloride: 0.02%
Sodium: 3.00%	Sulfate: 0.02%

Export grade:

Content: 95%	Chloride (cl): 0.01%
Iron (Fe): 0.05%	Sodium (Na) : 0.3%
Sulfate (SO4): 0.05%	Insoluble substance in water: 0.01%
Water content: 1.0%