Bis(4-hydroxyphenyl) sulphone4,4'-Dihydroxydiphenyl sulphone4,4'-Sulphonyldiphenolbis(4-hydroxyphenyl)sulfone4,4'-DIHYDROXYDIPHENYL SULFONE TECHNICAL GRADEBPS4,4'-sulfonylbisphenolBisphenol S双(4-羟基苯基)砜Bisphenol S4,4′-磺酰基二苯酚4-Hydroxyphenyl sulfone4,4'-Dihydroxydiphenyl sulfone双(4-羟基苯基)砜4,4'-SulfonyldiphenolBis(4-hydroxyphenyl) sulfoneBis(4-hydroxyphenyl) sulfone双酚 S4-羟基苯基砜4,4′-SulfonyldiphenolBisphenol S4,4'-sulfonyldiphenolDHDPhSBis(4-hydroxyphenyl) sulfoneBis(p-hydroxyphenyl) sulfone4,4'-Dihydroxydiphenyl sulfone1,1'-Sulfonylbis(4-hydroxybenzene)