Textile Soaps And Oils a Handbook On the Preparation Properties And Analysis
Textile Soaps And Oils a Handbook On the Preparation Properties And Analysis
George H George Henry Hurst
The book Textile Soaps And Oils a Handbook On the Preparation Properties And Analysis was written by author George H George Henry Hurst Here you can read free online of Textile Soaps And Oils a Handbook On the Preparation Properties And Analysis book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Textile Soaps And Oils a Handbook On the Preparation Properties And Analysis a good or bad book?
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186 Textile Soaps and Oils TF?}V Iodine Test. — One of the most convenient methods of determining the iodine vahie of an oil is undoubtedly that devised by Wijs, who makes use of a solution of iodine mono- chloride in glacial acetic acid. There are required, besides this, chloroform to act as a solvent for the oil, a 10 per cent, solution of potassium iodide in water, a 5 per cent, solution of starch, and a standard decinormal solution of sodium thiosulphate, containing 24*8 grms. Of the pure s...alt in 1 litre of water. The solution of iodine monochloride is easily prepared by dissolving 51 '2 grms. Of iodine in 1000 c. C. Of glacial acetic acid, then passing a current of dry chlorine gas into the mixture until the colour changes from brown to yellow. The method of carrying out the test is as follows : — 1 to 2 grms. Of the oil are weighed into a wide-mouth flask, 10 c. C. Of chloroform are added to dissolve the oil, and then 25 c. C. Of the iodine solution. The mixture is allowed to stand for ten minutes for the reaction to complete itself.
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