1. Common Name (Nonproprietary Name) Nitric Acid Proper Name Nitric Acid Source/Form (if applicable) Synthetic French Name (Nonproprietary Name) Acide nitrique Chemical Name and CAS Registry number [7697 - 37 - 2] Synonyms/ Formula Azotic Acid, Engravers Nitrate, Hydrogen Nitrate; HNO3 Functional Categories (not all inclusive) Acidifying Agent; Starch Modifying Agent Limitations (for external or internal use, unless specified 2).