starcrafttom":2b2gi04e said:
I have a question. do you have to use denatured alcohol or can you use something else? Susan does not like the smell of the denatured alcohol and wants to change to something else. Will medical alcohol work? or is the flash point different?
It depends on what you mean by "medical alcohol".
If you mean "rubbing alcohol" the answer is no, as it is not ethyl alcohol, but isoprophyl alcohol, and actually a mixture of 68% to 99% isoprophyl alcohol and the rest water. The water will definitely limit it's "burnability" or combustibility in higher water concentrations. Plus, if Susan doesn't like the smell of ethyl alcohol and it's partially l burned by-products, the isoprophyl will be much worse.
If, however, you mean 100% ethyl alcohol (without any "denaturing" additives, then you're back to pure alcohol, and it will burn just fine. The problem here is that the Federal Government taxes all ethyl alcohol (liquor laws), and you have to buy pure alcohol, paying the full tax on it, unless you're a licensed medical, educational, or research institution, in which case you apply for a special permit to buy, hold, and use alcohol w/o paying the liquor tax.
"Denatured" alcohol is ethyl alcohol with (usually about 10% methyl alcohol (also called wood alcohol) added to make it undrinkable (poisonous). This is what is usually used as a stove fuel. Pure methyl (wood) alcohol will also work, but is more expensive to make.
Sorry this is such a confusing subject!
Joe. :teeth :thup