Acids, Noncarboxylic [Chemical/Ingredient] Nitrogen Compounds [Chemical/Ingredient] Nitric Acid [Chemical/Ingredient] Nitric Acid Nitric acid (HNO3). A colorless liquid that is used in the manufacture of inorganic and organic nitrates and nitro compounds for fertilizers, dye intermediates, explosives, and many different organic chemicals. Continued exposure to vapor may cause chronic bronchitis; chemical pneumonitis may occur. (From Merck Index, 11th ed) N0000008166 Nitric Acid 31835 D017942 M0027104 C26696 Nitric acid C0068808