Methods for the preparation of the mononitrosalicylic acids.(1) 50 grns of nitric acid (1.5 sp. gr.) are added in small portions to a cold solation of 100 gms salicylic acid in 500 or 800 gins glacial acetic acid. The resulting liquid i 4 diluted with 2 or: j vol. water and cooled down very low.(2) 10 gms salicylic acid are gradually added to a mixture of 10 gms fuming nitric and 10 or 12 gnis glacial acetic. acid; the resulting liquid is poured in 250 cc very cold water. The ...