• sulphuric
  • Deals in Dithranol, N, 1 Hexanesulfonic Acid Sodium Salt Monohydrate, Dimethyl Isosorbide, sulphuric acid, N N Diethyl P Phenylenediamine Sulfate, 1 Heptane Sulfonic Acid Sodium Salt Monhydrate, 1 Pentanesulfonic Acid Sodium Salt Monohydrate, N-Dimethyl-P-Phenylenediamine Dihydrochloride. (indianyellowpages.com)
  • iron
  • Some sulfuric acid is also made from ferrous sulfate waste solutions from pickling iron and steel and from waste acid sludge from oil refineries. (chemicalland21.com)