SEARCH Articles Figures Tables 4- Amino phenol-2-sulfonic acid Alkyl sulfonic acid esters of phenol Dihydric phenols, sulfonation Phenol adsorption dodecyl benzene sulfonate Phenol benzene sulfonation process Phenol sulfonic acid Phenol-4-sulfonic acid, 2- copper complexes Phenolated lignin sulfonates Phenolic resins sulfonation Phenols from sulfonic acids Phenols reaction with sulfonic acid Phenols sulfonations, sulfur trioxide Sodium phenol sulfonate Sulfonate esters to protect phenols Sulfonated phenol-formaldehyde polymer Sulfonation, benzoic acid phenol Sulfonic acid amides phenols Sulfuric acid/sulfonated phenolics