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 2390 (OTTO) Potassium nitrite, GR 98%+ Cas 7758-09-0 - used as a strong oxidizing agent as well as involved in the preparation of heat transfer salts. In addition, it is employed as corrosion inhibitors and anti-scaling agents.