1,3-Benzenedicarboxylic acid, 5-sulfo-, 1,3-dimethyl ester, potassium salt 10433-41-7 5-Sulfo-1,3-benzenedicarboxylic acid, 1,3-dimethyl ester, potassiumsalt 51541-97-0 Dimethyl 5-sulfoisophthalate, potassium salt EINECS 233-915-0 Potassium dimethyl 5-sulphonatoisophthalate