Nitric acid fuming nitric acid at concentrations above 86%. Nitric acid is the primary reagent used for nitration – the addition of a nitro group, typically to an organic molecule. While some resulting nitro compounds are shock- and thermally-sensitive explosives, a few are stable enough to be used in munitions and demolition, while others are still more stable and used as pigments in inks and dyes. Nitric acid is also commonly used as a strong oxidizing agent. Commercially available nitric acid is an azeotrope with water at a concentration of 68% HNO, which is the ordinary concentrated nitric acid of commerce. This
Quercitannic acid (CHO). For him, it was not a glycoside. In Allen’s "Commercial Organic Analysis", published in 1912, the formula given was CHO. Other authors gave other molecular formulas like CHO, while another formula found is CHO. According to Lowe, two forms of the principle exist – one soluble in water, of the formula CHO, and the other scarcely soluble, CHO. Both are changed by the loss of water into oak red, CHO. Quercitannic acid was for a time a standard used to assess the phenolic content in spices, given as "quercitannic acid equivalent". Quercitannic acid Quercitannic acid is one of the