sulfur dioxide sulfur dioxide PDBeChem:SO2 CHEBI:18422 sulfurous oxide Schwefel(IV)-oxid CAS:7446-09-5 SO2 RAHZWNYVWXNFOC-UHFFFAOYSA-N CHEBI:9351 KEGG:C05532 sulfurous anhydride KEGG:D05961 Gmelin:1443 Sulfur dioxide R-764 Europe::220 64.06480 LanguaL term definition: Food additive; technological purpose(s): antioxidant, preservative. O=S=O chebi_ontology KEGG:C09306 Schwefeldioxid sulphur dioxide 0 dioxidosulfur [SO2] SULFUR DIOXIDE CHEBI:8992 O2S 63.96190 CHEBI:45789 Codex::220 InChI=1S/O2S/c1-3-2 sulfur dioxide sulphur dioxide organosulfur compound sulfur oxide food additive