Propylene Glycol by perscription only?!?!?!?

[xogul]

You can just ask for it. I find it's easier online. The pharmacy will charge you the same as the cost + shipping from any online supplier (according to the prices I've seen posted on here--I've only purchased it online) and this way it comes right to your door rather than making another trip to the pharmacy to pick it up. USP means it's approved for consumption by the United States Pharmacopeia (food-grade). I got some here:

Yes, it can be vaped straight. Slightly sweet.

Thank you for the reply. I'm not in the US so the USP part was confusing me . I'm a regular client of isopropyl alcohol at the local pharmacy so when needed I hope they don't overcharge me. The question about PG was to prevent my dumb face when (if) the man behind the counter asked me "what kind of PG?"

[Applejackson]

It's not that they're overcharging, but they have to pay shipping too. If you order it yourself, you save 2 trips to the pharmacy. A pharmacy should only have 1 kind available though.

[BlueSun]

Reminds me of the time I was buying some plastic shelving at Walmart and the girl at the checkout said, not too brightly, "Buying some shelves?" "Yea!", I replied brightly, "It's for my severed head collection!".

Some people just have no damned sense of humor.

I would've laughed, but, when you'd left, probably have thought to myself for the rest of the day, "My god, what if he was serious?" You never know these days!

[DVap]

DVap, what do you mean by "sealed"? Do you mean airtight/vacuum type of seal? Once I open the bottle the original seal is broken.

What I meant by "sealed" is simply to screw the lid on to preclude particulate contamination (dust, etc) and additional moisture absorption. The water vapor present in the head-space of the container is fairly irrelevant, the act of opening and closing the container many times will only add up to a small fraction of water being absorbed into the PG.

When I search the literature for oxidation of propylene glycol, I am finding references to catalysts, high temperatures, and strong oxidizing agents such as potassium permanganate.

I believe it unlikely that the oxygen contained at room temperature in the head-space of a container of PG is a sufficiently strong oxidizer to affect PG under normal storage conditions.

The reason you'll find expiration dates on some materials is simple: They're required to have one.

Here's an example. HPLC grade water is a very pure grade of water used as a "mobile phase component" in high pressure liquid chromatography. Even if kept unopened, guess what, it has an expiration date. (wouldn't want it absorbing water, I guess)

(and BlueSun, if you can't have fun with the WalMart folks, what's the use of living?)

[MrKai]

What I meant by "sealed" is simply to screw the lid on to preclude particulate contamination (dust, etc) and additional moisture absorption. The water vapor present in the head-space of the container is fairly irrelevant, the act of opening and closing the container many times will only add up to a small fraction of water being absorbed into the PG.

When I search the literature for oxidation of propylene glycol, I am finding references to catalysts, high temperatures, and strong oxidizing agents such as potassium permanganate.

I believe it unlikely that the oxygen contained at room temperature in the head-space of a container of PG is a sufficiently strong oxidizer to affect PG under normal storage conditions.

The reason you'll find expiration dates on some materials is simple: They're required to have one.

Here's an example. HPLC grade water is a very pure grade of water used as a "mobile phase component" in high pressure liquid chromatography. Even if kept unopened, guess what, it has an expiration date. (wouldn't want it absorbing water, I guess)

(and BlueSun, if you can't have fun with the WalMart folks, what's the use of living?)

"I could listen to him talk for hours..."

John Lennon - A Hard Day's Night

[Applejackson]

(and BlueSun, if you can't have fun with the WalMart folks, what's the use of living?)

People of Walmart

[xpetechp]

Wonder what kind of throat hit one of those would give?

There is a video of a guy using one on Youtube

[iblis]

People of Walmart

Oh hell, I'm so going to get into trouble taking pictures of people to submit to that site.

[Mr. Tasty Vapor]

Both PG and VG are easily accessible on Ebay. If you're looking for pharmaceutical grade PG, you may have a bit of a time getting some. Personally, I think it's just a bragging point for some suppliers rather than anything that makes any difference. However, and I don't know how SMALL the quantity you can buy, but most feed stores that deal with livestock, horses, cows, etc., you can easily pick PG up as it's used for treating illness in these animals.

VG, yes, you can get this easily in shops that deal in cake making supplies, as you can Lorann oils, etc.

[Applejackson]

Oh hell, I'm so going to get into trouble taking pictures of people to submit to that site.

You just gotta learn to do it like you're using your phone or texting. I use this technique to take pictures of weirdos on the bus all the time. Make sure flash and shutter sound are off!!