Iodine value means the “g” value of halogen which adhere to g of methods such as Hanus method and Wijs method for Iodine value. The processors of oil and fat are in need of a quick determination method of iodine value of oils and fats especially in case of checking the degree of. This test method covers the determination of the iodine value of fats and iodine value of fats and oils that do not contain conjugated 3 Wijs Solution ( Iodine Monochloride Solution) may be purchased commercially. 1.

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XX is the XXth reference in the list of references. Views Read Edit View history. The Wijs method as the standard for iodine absorption. If you are the author of this article you still need to obtain permission to reproduce the whole article in a third party publication with the exception of reproduction of the whole article in a thesis or dissertation. Kapok seed oil [9]. From Wikipedia, the free wija.

Iodine value

Reproduced material should be attributed as follows: The iodine value or iodine adsorption value or iodine number or iodine index in chemistry is iwjs mass of iodine in grams that is consumed by grams of a chemical substance.

You do not have JavaScript enabled. This particular analysis is an example of iodometry. Back to tab navigation.

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Triglycerides are made up of three fatty acids linked to glycerol by fatty acyl esters. Saturated fatty acids will not give the halogenation reaction. This reaction must be carried out in the dark, since the formation of wojs radicals is suppressed by light. By using this site, you agree to the Terms of Use and Privacy Policy. So handle the reagent with gloves. Walnut oil [7] [8]. They are likely to exists as liquids at room temperature.

Register Already have an account? Previous Article Next Article. Hoffman and Green modified the Wijs’ method by employing mercuric acetate as catalyst and made it possible to determine the iodine value of a sample in ten minutes or so.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page. Analytical chemistry Dimensionless numbers of chemistry Iodine. Saturated fatty acids contain only single bond between the carbon atoms and are tend to be solids at room temperature.

This may take some time to load. The processors of oil and fat iodinw in need of a quick determination method of iodine value of oils and fats especially in case of checking the degree of unsaturation of them in the hydrogenation process. If you are not the author of this article and you wish to reproduce material from it in a third party non-RSC publication you must formally request permission using Copyright Clearance Iodiine.

This page was last edited on 18 Decemberat Oidine determine the iodine value of fats and oils and thus estimate the unsaturation of the fats and oils. The Wijs method as the standard for iodine absorption J. For reproduction of material from NJC: For reproduction of material from PPS: If the material has been adapted instead of reproduced from the original RSC publication valye from” can be substituted with “Adapted from”. Estimation of Iodine Value of Fats and Oils.

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Authors contributing to RSC publications journal articles, books or book chapters do not need to formally request permission to reproduce material contained in this article provided that the correct acknowledgement is given with the reproduced material.

Rapeseed and Canola Oil: December 20, received: Unsaturated fatty acids can be converted into saturated by the process of hydrogenation. The first page of this article is displayed as the abstract. So it is important to know the extend to which a fatty acid is unsaturated. Go to our Instructions for using Copyright Clearance Center page for details.

On the Determination of Iodine Value by the Wijs’ Method

Iodine monochloride is caustic. For reproduction of material from PCCP: Back to tab navigation Fetching data from CrossRef. Unsaturated fatty acids contain double bonds between the carbon atom in addition to the single bonds present in the fatty acid chain. Jump to site search.