2 4 6 trichlorophenol melting point July 8, 2019 16 32 64 128 2 4 6 trichlorophenol melting and boiling point 2 4 6-trichlorophenol 2 4 5-trichlorophenol 2 4 6-trichlorophenol cas 2 4-dichlorophenol