Potassium Nitrate Ar
Quick Overview
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Chemical Specifications
Appearance
White crystalline powder
Assay (as KNO3)
99 - 100.5%
Identity (acc. to pharmacopoeias)
Passes test
Appearance of solution
Passes test
Reducing substance
Passes test
pH (5% solution in water; 20°C)
4.5 - 8.5
Acidity or alkalinity
Passes test
Chloride (Cl)
Max 0.001%
Chlorate and perchlorate (as Cl)
Passes test
Sulphate (SO4)
Max 0.003%
Phosphate (PO4)
Max 0.0005%
Lead (Pb)
Max 0.0005%
Arsenic (As)
Max 0.0003%
Iron (Fe)
Max 0.0003%
Calcium (Ca)
Max 0.001%
Sodium (Na)
Max 0.02%
Ammonium (NH4)
Max 0.001%
Iodate (IO3)
Max 0.0005%
Nitrite (NO2)
Max 0.0005%
Loss on drying (at 105°C)
Max 0.5%