Originally Posted by
cyccommute
Heet is a methanol product. It contains 99% methanol with 1% of a proprietary additive. As I've stated above, ethanol...the "alcohol" that most people are familiar with...can be denatured in a variety of ways that may, or may not, add toxicity to the liquid.
This depends on the Heet product. The yellow bottle contains methanol. The red bottle contains isoproponal plus additives. That's from the Gold Eagle website.
Contrary to recent advice in another thread, it seems that the red Heet is in fact the most suitable for use in alcohol stoves.