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Potassium nitrate is a chemical compound with the chemical formula KNO3. It is an ionic salt of potassium ions K+ and nitrate ions NO3−.It occurs as a mineral niter and is a natural solid source of nitrogen.
P 3402 (OTTO) Potassium nitrate, suitable for cell culture, suitable for plant cell culture Cas 7757-79-1 - used in CPW13M solution to extract the protoplasts from plant cells.