7778-73-6 89417-06-1 Caswell No. 641A EINECS 231-911-3 EPA Pesticide Chemical Code 063002 Pentachlorophenol potassium salt Phenol, pentachloro-, potassium deriv. Phenol, pentachloro-, potassium salt Potassium pentachlorophenate Potassium pentachlorophenolate Potassium pentachlorophenoxide Potassium, (pentachlorophenoxy)-