Iodine Number

Iodine Number


OELCHECK Test equipment:	Device according DIN
Sample quantity needed:	2 ml
Unit:	-
Test result:	Iodine number
Operating time:	~ 45 minutes
Analysis of:	The Iodine number is like the saponification number a value to characterise greases and the grease in oils. As higher the amount of unsaturated fatty acids are, as higher is the Iodine number.
Brief description:	The iodine number specifies the amount of halogens in gram which are picked up from grease or native oils. To determine the Iodine number excessive Iodine is going to be titrated backwards in using a sodium thiosulfate solution in a solution of starch as a tracer. The consumption of titration medium is the Iodine number.
Statement:	The Iodine number is the index for the amount of unsaturated chemical compounds in a fluid. A low Iodine number shows that the liquid contains only a low number of unsaturated chemical compounds. The liquid with low Iodine number is therefore much more stable against oxidative degradation than a liquid with high Iodine number. Oils are characterized as saturated if their Iodine number is lower than 10. Unsaturated liquids have a much higher Iodine number. For example rape oil with an Iodine number of about 120.