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iodine number |
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iodine number [′ī·ə‚dīn ‚nəm·bər] (analytical chemistry) A measure of the iodine absorbed in a given time by a chemically unsaturated material, such as a vegetable oil or a rubber; used to measure the unsaturation of a compound or mixture. Also known as iodine value. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Evaluation of the cost/performance properties like flex fatigue and heat build-up of carcass compounds have been studied by lowering the iodine number value from 84 (for N330) to 58 mg/gm in different polymer blends (NR, NR+BR and NR+SBR) in consideration of the severity of the final product requirements. The CTAB Surface Area test was designed to overcome both the problems mentioned for the iodine number and nitrogen surface area tests; in that the molecule to be adsorbed, cetyltrimethylammonium bromide, is far larger than the nitrogen molecule and is also a very effective wetting agent. Figure 2 shows the calculated histogram of two hypothetical blends (percentage by weight) of N110/N762: 50/50 and 35/65 (calculated to approximately match the iodine number of 68 for N351). |
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