Reminds me when I would get bottles of tetracene from TCI, they would always claim >95% purity, but by NMR I could clearly see 15-20% 5,12-dihydrotetracene. Thankfully you could wash it out with acetone, but still...
TCI can be cavalier with their purity specs. I had bought (if I remember correctly) n-dodecyloxirane 98%+ from them that had actualy >10% of assorted isomers. Looks like their alpha olefin from which they made the stuff had some little branches in it - which they must have known full well but did not bother to disclose it to the customers
looks like Blogger doesn't work with anonymous comments from Chrome browsers at the moment - works in Microsoft Edge, or from Chrome with a Blogger account - sorry! CJ 3/21/20
Should be labeled Meth Lab grade.
ReplyDeleteComic Sans?!
ReplyDeleteIt's the official font of chemical bogosity.
DeleteWe once bought a chemical packed somewhere in Europe and I kid you not CoA was signed by Dr. Van Look.
ReplyDeleteReminds me when I would get bottles of tetracene from TCI, they would always claim >95% purity, but by NMR I could clearly see 15-20% 5,12-dihydrotetracene. Thankfully you could wash it out with acetone, but still...
ReplyDeleteTCI can be cavalier with their purity specs. I had bought (if I remember correctly) n-dodecyloxirane 98%+ from them that had actualy >10% of assorted isomers. Looks like their alpha olefin from which they made the stuff had some little branches in it - which they must have known full well but did not bother to disclose it to the customers
Deletehaha this is hilarious.
ReplyDelete