iodine number


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i·o·dine num·ber

an indication of the quantity of unsaturated fatty acids present in a fat; it represents the number of grams of iodine absorbed by each 100 g of fat.
See also: hydrogen number.
Synonym(s): iodine value
References in periodicals archive ?
Babassu biodiesel ANP 45/2014 Specific gravity at 20 854 [+ or -] 9.2 850-900 [degrees]C (Kg [m.sup.-3]) Specific gravity at 40 832 [+ or -] 8.0 Not [degrees]C (Kg [m.sup.-3]) specified Kinematic viscosity at 20 6.75 [+ or -] 0.22 Not [degrees]C ([mm.sup.2] specified [s.sup.-1]) Kinematic viscosity at 40 3.04 [+ or -] 0.12 3.0-6.0 [degrees]C ([mm.sup.2] [s.sup.-1]) Acid number (mgKOH/g) 0.013 [+ or -] 0.002 0.50 Iodine number ([gl.sub.2]/100g) 48.6 [+ or -] 1.1 Registered Free glycerin (%) 0.024 [+ or -] 0.002 0.25 Table 2.
Iodine number is the most fundamental parameter used to characterize activated carbon performance and it is a measure of activity level, the higher the number the higher the degree of activation.
Reduction of double bonds content on the AF grafted particles was observed using iodine number titration.
Biodiesel with high iodine numbers will produce esters with the flow and solidification at low temperature.
The iodine number is a relative indicator of porousity in an activated carbon but it does not necessarily provide a measure of the the carbon's ability to adsorb other species.
With surface attachment, modified blacks turned more acidic and showed lower analytical properties like tinting strength, DBP absorption, iodine number, etc., conventionally used to characterize carbon black.
Characterization of pyrolysis oils and residues Characteristic PVC waste Mixture of PVC waste and oil shale ash Cl content of residue, wt % * 2.35 13.33 Cl content of oil, wt % 4.93 2.80 Density of oil, g/cm3 1.0050 0.9220 Iodine number of oil, g [I.sub.2] 19.3 46.3 per 100 g oil * note that co-pyrolysis with ash produces 5 times more solid residue per PVC waste mass unit.
Traditional iodine number information tests can only go so far and sometimes fail when used in analyses of absorbed taste and odor in water supplies, and toxic agents or other pollutants in the air.
The CTAB surface area test was designed to overcome the problems with the iodine number and nitrogen surface area tests, in that the molecule to be adsorbed, cetyl-trimethyl-ammonium bromide, is far larger than the nitrogen molecule and is also a very effective wetting agent.
This property was found to have no correlation with the iodine number. The carbon black N375 was found to have a very narrow distribution pattern of aggregates compared to the others (figure 1).
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).
* iodometric titration, resulting in a so-called iodine number, or expressed as C = C double bonds per 1,000 C-atoms;