Asked by Summer

My question is about Determination of Iodine Value in Fats & Oils experiment. I can't seem to get the right IV for coconut oil (Iv = 7-11 range). I followed the procedure used by American Oil Chemists Society, but still I'm getting an IV value of around 1.
The volume of titrant for blank that I got is around 21 mL of 0.1 N Na2S2O3, while with the sample is 18-19 mL.
What could have been the problem? Please help.
Answered by Tarunima
Check the normality of Na2s2o3 .
Answered by DrBob222
If your blank is larger than the sample by that amount I suspect contamination o the blank.
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