I got a situation recently. Final dry product got a light weird odor that I have never met, but immediately understood what it is - iodoketone. Distinctive iodine scent forced with ketone group.
The situation is clear: doing my base extraction, I used NaCl food grade that includes 0.3%of KIO3
I.e., processing of KIO3 in acetone in presence of acid leads to iodoketone formation. This reaction is well known and described, may run in presence of various acids.
I've done two different experiments with the same result:
1. Mixed water + NaCl food grade + acetone, then added acid. The same weird odor appeared immediately.
2. Mixed water + NaCl food grade + NaOH + acetone, then added acid. There was no this odor appearance while pH was alkali. It appeared as soon as it turned to acidic.
Be careful and do not use NaCl food grade.
The situation is clear: doing my base extraction, I used NaCl food grade that includes 0.3%of KIO3
I.e., processing of KIO3 in acetone in presence of acid leads to iodoketone formation. This reaction is well known and described, may run in presence of various acids.
I've done two different experiments with the same result:
1. Mixed water + NaCl food grade + acetone, then added acid. The same weird odor appeared immediately.
2. Mixed water + NaCl food grade + NaOH + acetone, then added acid. There was no this odor appearance while pH was alkali. It appeared as soon as it turned to acidic.
Be careful and do not use NaCl food grade.