Synonyms:C.I. Sulphur Brown 10 Pyrite,reactions Sulfur oxide (SO2) sulphur dioxide See also Sulfur dioxide Air pollutionsulfur dioxide Sulfur dioxide SO2 dioxidosulfur See also Iron [7439-89-6],preparation roasting ;; see also Sulfur dioxide pyrite burners for ;; see also Burners,pyriteburners sulfur dioxide for ;; see also Sulfur dioxide