As a solvent in the manufacturing of PEEK (poly-ether, ether ketone) engineering plastics
As the raw material for the manufacturing of potassium salt of diphenyl sulfone -3 sulfonic acid (KSS). KSS is halogen free flame retardant for transparent polycarbonate
In acid tin and acid copper plating to control the atmospheric oxidation of Stannous ion and for increasing the hardness in the copper deposits respectively
In tanning formulations
In dyeing of polyester fibres
In printing ink for improved storage stability and viscosity stabilizer for epoxy polymers
Adjuvant in Phenolic Resins and Ion Exchange Resins to enhance its exchange capacity