The chemical Potassium nitrite has a designated molecular formula of KNO2 and a molecular weight of 85.103 g/mol. Synonyms may include: Caswell No. 698, CCRIS 3959, EINECS 231-832-4, EPA Pesticide Chemical Code 076203, HSDB 1216, Nitrous acid, potassium salt, UNII-794654G42L (ChemID).