HI U KAREN, , , , , , , , , , Seems to me that you might be getting caught up in stuff that is much to do about nothing. I buy my DMSO from Dr Jacobs and he is Mr. DMSO and states that DMSO in a poly bottle is good, but if you got a hang up, then he will ship it in a glass container for $ 5 more. He did all the original research on DMSO for Crown Zellerbach back in the 60's . What are your credentials?
What you have to watch is that most compounds distill off at a certain purity and if you want it higher then it is done by it is done by removing the water by decanting with a solvent. When I was a poor whipper snapper at Ga Tech and in Organic Chemistry, instead of stealing ethanol at 95% , I stole the the Absolute ethanol at 100%, because that had to be better. The more I stole for our Frat parties, the worse I felt.
The next summer I had a grad student teaching the class. He covered Absolute 100% ethanol, which was made by decanting the water from the 95% by using benzene and this left traces of benzene in the Absolute. Benzene is accumulative in your body and when you reach 10 grams , then you die. After that lecture , I went to him after class and explained what a friend of mine had done by stealing from the Organic Lab.
He had been down a few dusty road and told me very emphatically not to ever do that again. Since I's SJS , I never did, but I have always wondered how many grams of benzene I do have.
The lady who buys her 99% DMSO from the Farm Co-op will get no flack from me and I question your problem with it.
=========OLE ROBERT HENRY=============
Medical Grade vs Industrial DMSO
In response to Anne's post, the grade is not in reference to the amount of water in DMSO, it's in reference to purity, meaning that DMSO that is of pharmaceutical grade is 99.99% pure - the chances of it containing any solvents or other additives is minute.
This is the grade used in cryogenic preservation (shipment of organs for transplant), and in transdermal patches. The risk of any other grade is unknown unless you have access to a testing facility that can tell you what the other percentage is, i.e., the 1% or more which is not DMSO. That 1% can make all the difference when it comes to treating the human body, so misinformation can be damaging.
I use only 99.99% pure DMSO in my topical pain formula, just as I use only the highest grade essential oils and extracts, organic, extra-virgin coconut & olive oils, and organic grapeseed and hemp oils.
Medical Grade vs Industrial DMSO
Regarding "Industrial" DMSO vs "Medical grade." Several years ago I was interested in DMSO and did quite a bit of research on this stuff. It is truly a wonder product, but I was concerned about the 'purity' thing. So I contacted the company that makes DMSO and asked them about it. This is what they told me. Dmso is Dmso, period. There is no 'medical grade' or 'industrial' grade. It is all the same. DMSO is Dimethyl sulfoxide period. The only difference is how much distilled water is mixed with it. If it is 70% DMSO that just means it has been mixed with 30% distilled water. If it is 99% pure, it means it was mixed with 1% distilled water. If it says 99.9% pure, it has no measurable distilled water mixed with it. PERIOD> So when you read on the internet that 'their' product is "more pure" than anyone elses, you're being "taken". I've seen ads stating that "Our product is only 'Medical grade'" to justify charging as much as 38.00 per bottle!! ? This is ridiculous! I buy my bottle of DMSO at our FEED and SEED store for 7.50!! It is 99% pure and I have been using for years! So don't be taken to the cleaners over this stuff. Do your own research.!!!