Potassium nitrite (distinct from potassium nitrate) is the inorganic compound with the chemical formula KNO2. It is an ionic salt of potassium ions K+ and nitrite ions NO2−, which forms a white or slightly yellow, hygroscopic crystalline powder that is soluble in water.
P 2389 (OTTO) Potassium nitrite, 98% Cas 7758-09-0 - used in laboratories to test for amino acids and to accelerate the combustion of other materials. P 2389 (OTTO) Potassium nitrite, 98% Cas 7758-09-0 - used in experiments as a source of nitrites, which was observed to decrease blood pressure and lead to hypertrophy.