Publication: Nitration by means of a mixture of nitrosulfonic and fuming nitric acids
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Date
1925
Journal Title
Journal of the American Chemical Society
Journal ISSN
Volume Title
Publisher
Abstract
1. A 45-50% solution of nitrosulfonic acid in fuming nitric acid, prepared by passing sulfur dioxide into cold fuming nitric acid, is a better nitrating agent than the usual mixture of nitric and sulfuric acids. 2. This reagent has been employed to nitrate various phenols, anilines, aromatic acids and hydrocarbons, as well as benzanilide and benzaldehyde. 3. It is suggested that nitrosulfonic acid functions because of its dehydrating action. In this respect it is more efficacious than sulfuric acid; hence the amount of nitrosulfonic acid necessary is considerably less than that of sulfuric acid ordinarily employed in nitrating mixtures. © 1925, American Chemical Society. All rights reserved.