Here is the full copy of the MSDS done by a Chinese company. What is not included are the actual chemicals and amounts released when vaping and interactions with eliquids.
Sorry, they all run hot and I’d be willing to bet your heat issues are normal. I use multiple devices to overcome my heat issues so I can vape a second device while the first cools off. Another work around is a heat sink like this:
it screws between the tank and the mod to help the mod stay cool.