Someone was saying that ISO is poisonous and left inside our concentrate which will then destroy our liver over time.
Hello class, this week we are going to be covering IPA(isopropyl alcohol, isopropanol, 2-propanol, etc) vs Etoh(ethyl alcohol, pure alcohol, grain alcohol, everclear, etc), as this seems to be a popular topic lately, or rather many folks seem to be using IPA for their food grade extractions, so here we will illustrate the differences, and explain why you should use Etoh INSTEAD of IPA (iso) for all your food grade extractions.
To start us off, http://en.wikipedia.org/wiki/Isopropyl_alcohol
Now that you have read that, note that IPA comes mainly from the mixing of water and propene, that's right, a petroleum distillate!
Now he we will show a specification report for Sigma's 99.7%+ pure IPA (it's a PDF): http://www.sigmaaldrich.com/Graphics..._ALDRICH__.pdf
Now note the presence of things like arsenic, cadmium, mercury, and lead, keep in mind they are still present in this commercially refined "pure" product, so imagine what they are in the store bought brands (that purposefully keep it filthy anyways to prevent people drinking it[needs cite]).
Now here we have an MSDS report for 99% isopropanol http://www.sciencelab.com/msds.php?msdsId=9926005
And one for 70% http://www.transdesign.com/MSDS/La%2...seventyIPA.pdf
Both clearly stating that IPA causes gastrointestinal problems, and over-exposure can cause damage to some internal organs, also "Persons with severe skin, liver or kidney problems should avoid use."
Now posting a spec report of ethanol is virtually useless, the pure grades contain usually nothing besides water and ethanol, maybe a point or two of methanol, but for shits and giggles, here is one of 200 proof: http://www.sigmaaldrich.com/Graphics..._SIAL_____.pdf
Here's the wiki for you to read up on real quick: http://en.wikipedia.org/wiki/Ethanol
now notice it can be made from either petroleum feedstock, or through the fermentation of sugars, the latter being drinking alcohol, also known as everclear. Speaking of everclear, we have 2 MSDS reports here, one of 151 proof everclear (http://www.nafaa.org/ethanol.pdf
) and one of 190 proof everclear (http://www.sciencelab.com/msds.php?msdsId=9923956
I'd like to point out, that the oral LD50 in mice, for both is around the same at about 3500mg/kg, but if you did all the reading you'd remember reading that (according to oxford) less than half the LD50 can cause toxicity in a 70kg human if left untreated.
After reading this, ask yourself which you'd rather use in the end... And feel free to ask any questions.
Thoughts on the legitability of this? Also anyone have any idea if anything is left over?
I've used ISO and Everclear with no distinction of the 2, or differences......