Improvements in the manufacture of salicylide or salicylic anhydride.
- F. Hoffmann-La Roche & Co.
- Date:
- 1902
Licence: Public Domain Mark
Credit: Improvements in the manufacture of salicylide or salicylic anhydride. Source: Wellcome Collection.
3/4 page 3
![20,188.—A.D, 1901. Welter's Iruprovement in the Manufacture of Salicylide or Salicylic Anhydride. to 30 its quantity of water, tliereby causing the salicylide to separate in the shape of white cheese-like flakes whieh are subsequently dried. Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I declare that what 5 I claim is ; — 1. The process for obtaining salicylide, which consists in heating aceto-salicylic acid to 200—210^ for a considerable time, boiling the product of the reaction with water, subsequently dissolving it in acetone or similar solvent, and finally pre¬ cipitating with water, substantially as described. 10 2. Tlie method of producing salicylide, substantially as described. '). Pure salicylide having the properties described and obtainable in the manner substantially as described. Hated this 30th day of June 1902. EAIHPAX & WETTER, ] 5 Agents, 3T and 39, Essex Street, Strand, London. R:dliill. I'rinted for His Majesty's Stationery Office, by Love & Malcorason. Ltd.—1902.](https://iiif.wellcomecollection.org/image/b3073809x_0003.jp2/full/800%2C/0/default.jpg)
