2,2'-Methylenebis(3,4,6-trichlorophenol) sodium salt 5736-15-2 Caswell No. 566A EINECS 227-245-8 EPA Pesticide Chemical Code 044902 Hexachlorophene monosodium salt Isobac Isobac 20 Monosodium 2,2'-methylenebis(3,4,6-trichlorophenate) Monosodium salt of 2,2'-methylene bis(3,4,6-trichlorophenol) Phenol, 2,2'-methylenebis(3,4,6-trichloro-, monosodium salt Sodium hydrogen 2,2'-methylenebis(3,4,6-trichlorophenolate) Sodium, (3,4,6-trichloro-alpha-(2,3,5-trichloro-6-hydroxyphenyl)-o-tolyl)oxy-