Removal of sulfuric acid compounds

A process for removing discoloring amounts of color forming sulfur compounds from the reaction products of a reaction mixture containing a terpene reduceable acid-reacting sulfur-containing ingredient as a reagent, reaction product or catalyst, the improvement comprising (1) reacting the reactants in the reaction mixture, (2) then reacting said acid reacting sulfur containing ingredient in the reacted mixture with an amount of an olefinic unsaturated terbene which is sufficient to react with and reduce all of said acid-reacting sulfur containing ingredients and form volatilizable reduction products of all of said sulfur containing ingredients and (3) then heating and maintaining the reacted mixture until no more gaseous products are formed at a temperature between about ambient temperature and about 320.degree. C that is sufficient to substantially reduce, volatilize and remove all of said sulfur containing reduction products to thereby provide an ultimate reaction product that is free of strong discoloring amounts of said color forming sulfur compounds.