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
Thioacetic acid Thioacetic acid Thioacetic acid is an organosulfur compound with the molecular formula CHCOSH. It is a yellow coloured liquid with a strong thiol-like odor. It is used in organic synthesis for the introduction of thiol groups in molecules Thioacetic acid is prepared by the reaction of acetic anhydride with hydrogen sulfide: It has also been produced by the action of phosphorus pentasulfide on glacial acetic acid, followed by distillation. Thioacetic acid is typically contaminated by acetic acid. The compound exists exclusively as the thiol tautomer, consistent with the strength of the C=O double bond. Reflecting the influence of hydrogen-bonding, the