Iodine week continues with IPBC, or 3-iodo-2-propynyl-N-butylcarbamate, a fungicide:
IPBC has been around for ages, but you see it more and more in cosmetic products. That "iodopropynyl" part, where the iodine is bound to the triply-bonded carbon, is a very reactive functional group. IPBC has been implicated as a cause of dermatitis (but fairly rarely).
Certain compounds can induce an immune reaction after repeated exposure. These are called sensitizers. At the levels you find them in consumer products, the worst you're likely to get is a rash (although not always). In the lab, we're usually exposed to the compounds neat, or undiluted.
Because of this, compounds that are sensitizers can really affect a chemist's quality of life over the years. Compounds that were once benign can induce coughing or sneezing fits (or basically anything along the immune-response spectrum). Sometimes, a sensitizer can induce cross-sensitivity to other, related compounds - leaving you in the unique position of being allergic to something you need to get your job done.
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The RSS feed for this site is broken. I've tred linking, delinking and realoding several times, but the RSS feed still does not work (whereas it does for all the other science Blogs I've book marked). This is true for Firefox on two separate computers.
Once however, the RSS feed on my astroblog http://astroblogger.blogspot.com/
went Belly up, this turned out to be due to cutting and pasting articles I had writen in MS word. It turned out that MS word added some mon-stardard HTML, which was not apparent from the cut and paste process, which choked the RSS feed software. WHile this might not be the case for your site, try getting the SB techies to look at it please, as I would like a working RSS feed to your excellent site.