· The vegetable oils were analyzed for their iodine values and the following results were obtained: For groundnut oil, the iodine values were found to be 86.00 g I2/100g, olive oil 81.01 g...

Edible, iodine value approximately 160, d 0.923, refr index 1.470-1.472. Contains approximately 10% saturated fatty acids (palmitic and stearic), unsaturated acids present are linoleic, lin-olenic, and oleic. Saponification value 190-193. [Pg.637]

= 98.5C2:12.69x0.1N x(43.40−4.70)0.5g= 98.2Discussion:Iodine value (IV) is a measure of the total number of double bonds present in fats and oils. Decrease in iodine value shows decrease in the number of double bonds and it indicatesoxidation of the oil.

Iodine | I2 | CID 807 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. National …

 · The iodine value is an identity characteristics nature of oil. The iodine value of an oil or fat is defined as the grams of iodine absorbed by 100g sample. How do you make iodine Monobromide? To 150 mL of saturated chlorine water in a 500 mL conical flask, add some glass beads, and pipette 5 mL of the Wijs solution into the flask.

 · Iodine number or "Iodine absorption value" expresses the percentage of iodine that is absorbed by the wax when treated with a suitable solution of iodine. It indicates the amount of unsaturated fat or wax acids, unsaturated esters, unsaturated hydrocarbons, and unsaturated alcohols inclusive of sterols and resins. [1] Contents 1Methods

 · Iodine value = 1.269 (b - a)/w where, w = weight, in g, of the substance. The approximate weight, in g, of the substance to be taken may be calculated by dividing 20 …

Drying oils, such as linseed oil, used in the paint and varnish industry have relatively high iodine values (about 190). Semidrying oils, such as soybean oil, have intermediate iodine …

 · What does iodine value indicate? The iodine value (IV) indicates the degree of unsaturation of a fat or oil. It is defined as the number of grams of iodine absorbed by 100 g of fat. Calculation of IV provides more accurate data, eliminating unsaturation present in unsaponifiable compounds. Is high iodine value good or bad?

 · The iodine value (or "iodine adsorption value" or "iodine number" or "iodine index") in chemistry is the mass of iodine in grams that is consumed by 100 grams of a chemical substance. Iodine numbers are often used to determine the amount of …

 · A new calculation method for the determination of iodine value (IV) from measurements of fatty acid methyl esters is proposed. The method is based on the quantitative determination of fatty acid methyl esters of vegetable oils by capillary gas chromatography. IV is a measure of the number of double bonds in the unsaturated fatty …

 · iodine monochloride (ICl) in acetic acid that reduces absorption time to approximately half an hour. The iodine monochloride halogenates the double bonds in the fat, and the residual ICl is reduced to free iodine in the presence of potassium iodide (KI) 3. The free iodine can then be titrated with sodium thiosulfate. The reaction is as follows:

 · Iodine value (IV) is a significant parameter to illustrate the quality of edible oil. In this study, three portable spectroscopy devices were employed to determine IV in mixed edible oil system, a ...

 · What is Iodine Value? Iodine value is a measurement to estimate the amount of unsaturation present in the fatty acids present in carcass fat. Since unsaturated fatty acids are 'softer' or less firm, iodine value can be used as indicator of overall carcass fat firmness. Iodine value can be measured by three different methods.

 · The iodine value (IV) is a measure of total unsaturation of a lipid material. The standard method EN 14111 in the European biodiesel standard is based on the classic wet chemical method (Wijs) for determining the IV. It purportedly serves a similar purpose in EN 14214 as do the restrictions on methyl linolenate and fish oil esters.

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The iodine value (IV) is still one of the most commonly applied indices in fatty acid chemistry. Its introduction in 1884 was a milestone in analysing fats and oils as well as describing their structure-property relationships, although it can be considered largely outdated because modern analytical methods such as gas chromatography and nuclear magnetic …

 · Methods. Several variations of iodine value have been developed, although Hanus method, Wijs method and Hubl method are still widely used. The iodine number is determinated with a "carrier" for the iodine, in which case the solution may be iodine monochloride in glacial acetic acid (Wijs); iodine monobromide in glacial acetic acid …

Determination iodine value. Iodine monochloride [] ICl, mol wt 162.38, 78.16% I, is a black crystalline soHd or a reddish brown Hquid. SoHd ICl exists ia two crystalline modifications the a-form, as stable mby-red needles, d = 3.86 g/mL and mp 27.3°C and as metastable brownish red platelets, d = 3.66 g/mL, mp 13.9°C and bp 100°C (dec).