Henry Edward Armstrong

Henry Edward Armstrong (1848-1937), was an English chemist.

Henry Armstrong was born and with lived all his life with Lewisham, suburbs of London. From 1865, it studied with the Royal College off Chemistry in London (currently department of chemistry of the Imperial College). At the 18 years age, Edward Frankland selected it as assistant to conceive methods of determination of the organic impurities present in water. In 1869, it obtained its doctorate for its work on the " acids of the souffre". In 1879, it accepted off a station with the City and Guilds London Institute (currently Imperial College). At the 36 years age in 1884, he became chemistry teacher in another institution at the origin of the Imperial College, the Central Institution .

In 1881, Henry Armstrong had begun the systematic synthesis, the study of the structure and degradation, many derivatives of the Naphtalène, while being based on preceding work in connection with the derivatives of the Benzène and on the proposal for a structure of naphthalene ridge by Erlenmeyer. Henry Armstrong and his principal collaborator W.P. Wynne accumulated a collection of 263 naphthalene samples which is currently preserved at the Imperial College under the name of Armstrong-Wynne Collection . This work gave a great dash to the industry of the dyeings. Thereafter its research was directed towards the terpenes, in particular the Camphre, towards the purification of water, thus helping with éradiquer the Typhoid fever; like worms the Crystallography.

In 1887, Armstrong started to be interested in classification of the substituents benzene according to their influences on the orientations méta-, ortho- or para. It was in an annotation on an article treating of this topic in 1890, that its formula of benzene appeared for the first time.

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