Do you really want to know what chemicals are in the electronic-cigarette juice that we are consuming/inhaling? I know I sure do and with a quick and simple search I found the below link to Wikipedia, the free online encyclopedia and their informative description of the electronic cigarette.
The interesting part is the section Nicotine solution that lists some, if not all of the possible ingredients that can be used in the production of the e-liquid we all use. You can subsequently click on each of the individual ingredients/chemicals and read all about its specifics.
If this has already been posted, I apologize for the inconvenience.
Wikipedia - Electronic Cigarettes

The interesting part is the section Nicotine solution that lists some, if not all of the possible ingredients that can be used in the production of the e-liquid we all use. You can subsequently click on each of the individual ingredients/chemicals and read all about its specifics.
If this has already been posted, I apologize for the inconvenience.
Wikipedia - Electronic Cigarettes
