CROMOGENIA-UNITS manufactures hydrotropes by–products from aromatic hydrocarbon sulphonic acid. These hydrotropes are used, in the manufacturing of detergents, as solubilizers of other compounds, used in the production of detergents, having an insoluble character. They act, besides, as viscosity modifiers agents of slurry before atomization and as turbidity reducers. A range of sulphonic acid based on toluene, xylene, cumene and phenol is also manufactured. It is apply in foundry as a phenol and furane resin catalyst, as well as an additive for mould make-up. In the chemical industry is used as catalyst in the manufacturing of plastifiers and resins for paint. And, finally, as a raw material in the production of certain pigments.