As an ethylating agent in the manufacture of aromatic and aliphatic ethers, amines, amides, esters and imides carbozole for dyestuff, pharmaceutical and flavour synthesis
As a hardener for cresol formaldehyde resin manufacture
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