A practical treatise on the manufacture of perfumery : comprising directions for making all kinds of perfumes, sachet powders, fumigating materials, dentrifices, cosmetics, etc., etc., with a full account of the volatile oils, balsams, resins, and other natural and artificial perfume-substances, including the manufacture of fruit ethers, and tests of their purity / by Dr. C. Deite, assisted by L. Borchert, F. Eichbaum, E. Kugler, H. Toeffner, and other experts. From the German by William T. Brannt.

  • Deite, C. (Carl), 1838-1921.
Date:
1892
Catalogue details

Licence: Public Domain Mark

Credit: A practical treatise on the manufacture of perfumery : comprising directions for making all kinds of perfumes, sachet powders, fumigating materials, dentrifices, cosmetics, etc., etc., with a full account of the volatile oils, balsams, resins, and other natural and artificial perfume-substances, including the manufacture of fruit ethers, and tests of their purity / by Dr. C. Deite, assisted by L. Borchert, F. Eichbaum, E. Kugler, H. Toeffner, and other experts. From the German by William T. Brannt. Source: Wellcome Collection.

    114/408 (page 104)
    the above-mentioDecl reaction. One part of pure cassia oil dissolves in two parts of 80 per cent, alcohol. Cinnamon root oil and oil of cinnamon leaves.—Neither of these oils contains cinuamaldehycle, but abundant quantities of eugeuol, the root oil as much as 50 to 70 per cent. The root oil is quite limpid and has an agreeable odor of cinnamon and cloves. The leaf oil is thickly-fluid, of the consistency of castor oil. The Ceylon oil is frequently adulterated with cassia oil. Such adulteration is very difficult to detect, and can only be recognized by experts by the odor and taste. The quality of cassia oil is recognized by the taste and odor, especially on heating, and the high specific gravity, in consequence of Avliich the oil sinks in water. Accord- ing to Hager, cassia oil is frequently adulterated with oil of cloves. This is, however, scarcely probable, the price of oil of cloves being, on an average, higher than that of cassia oil. The latter, however, is frequently adulterated with cheaper thickly-fluid volatile oils, es- pecially with cedar oil. In this case the oil does not dissolve in the above-mentioned proportion in alcohol. The value of cassia oil is dependent on its contents of cinnamaldehyde. Hence, the establishment of its actual value requires a quantitative determination of its contents of cinnamaldehyde, which unfortunately ])re- sents great difficulties. For this purpose Schimmel & Co. proceed indirectly as follows : 75 grammes of cassia oil in a capacious boiling flask are mixed with 300 grammes of a boiling-hot 30 per cent, solution of acid sodium sulphite, whereby cinnamaldehyde-sodium sul- phite is immediately separated. The whole is then vigorously agitated and allowed to rest for a short time.