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Stability of Pure Hydrocarbons to Light: Photochemical Formation of Color, Haze, and Reaction Products

✍ Scribed by Morrell, J. C.; Benedict, W. L.; Egloff, Gustav

Book ID: 126913264
Publisher: American Chemical Society
Year: 1936
Weight: 706 KB
Volume: 28
Category: Article
ISSN: 0019-7866
DOI: 10.1021/ie50316a020

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Response of cottonseed oil products to t

Response of cottonseed oil products to the kreis test for rancidity : In the Kreis test a fat or oil is shaken with equal volumes of hydrochloric acid and a solution of phloroglucinol in ether. The development of a red color indicates that the fat or oil is rancid; its formation is probably due to the presence of aldehydes or ketones in the material tested. Chromogenetic substances, which give a positive Kreis reaction, occur in crude cottonseed oil. The researches of W. B. Smith (Journal of Industrial and Engineering Chemistry, 1920, xii, 764–766)

📂 Article 📅 1920 🏛 Elsevier Science 🌐 English ⚖ 82 KB