The chemical Zinc chloride has a designated molecular formula of Cl2Zn and a molecular weight of 136.280 g/mol. Synonyms may include: AI3-04470, Butter of zinc, Caswell No. 910, CCRIS 3509, Chlorure de zinc [French], EINECS 231-592-0, EPA Pesticide Chemical Code 087801, HSDB 1050, NSC 529648, Zinc butter, Zinc chloride, (solution) (ChemID).