Iodine test for stearic acid

  • #1
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Main Question or Discussion Point

In my lab at college we were analysing various pharmaceutical excipients, stearic acid being one of them. We did an iodine value test on it. From what I've read, the iodine-value test is to determine the degree of unsaturation of a compound. Stearic acid is a saturated fatty acid so I don't understand how this test can be performed on it. It was a raw material sample we were analysing like you would do if you were a quality assurance analyst for a pharmaceutical company. What purpose could performing an iodine value test on a stearic acid raw material sample serve?
 

Answers and Replies

  • #2
Borek
Mentor
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Just guessing - if the result is anything but zero, you know you have unsaturated impurities.
 

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