Have a PDF safety sheet for it - https://www.fishersci.com/shop/msdsproxy?productName=AC265410050&productDescription=2-ACETYLTHIAZOLE%2C+99%25+5GR&catNo=AC26541-0050&vendorId=VN00032119&storeId=10652
Doesn't sound too nice, but then the amount that's in the liquid would be tiny. I'm pretty sure there are a lot of compounds used in flavorings that are harmful on their own and in enough quantity, but when used as a hundredth of a percent would do nothing. I'm not a chemist though, so take it as you will.
I did a quick Google search and really only saw some chemistry sites, speaking in a language I didn't get. Can anyone break this down for me? /u/abdada?
It isn't as risky as the warning sounds. It is a common bread crust aroma but used in teeny tiny amounts.
I've used it at 15-35PPM and it is kinda nice. Not destructive to flavor like 2-acetylpyrazine.
I personally have no health concerns over it unless a person knows they are sensitive.
I have asthma. Haven't had any issues from vaping anything yet, and Ive had a few biscuit recipes now. So shrug