para-toluenesulfonic acid

para-toluenesulfonic acid

[¦par·ə ¦täl·yə‚wēn¦səl¦fän·ik ′as·əd]
(organic chemistry)
C6H4(SO3H)(CH3) Toxic, colorless, combustible crystals soluble in water, alcohol, and ether; melts at 107°C; used in dyes and as a chemical intermediate and organic catalyst.
References in periodicals archive ?
Co-condensation reactions of methylolureas with resorcinols were performed in the melt at 100 [degrees] C and in aqueous solution (20 moles) at 20 [degrees] C without catalyst and in the presence of 0.001 mole of para-toluenesulfonic acid (p-TSA).