The safety of inhaling propylene glycol

[MF DOOM]

Here's a question I never see asked...and a pretty important one...
What the HECK is PG even made from...lets start there.

 

[HippieHermit]

So I'll keep on vaping and be fairly confident knowing I won't freeze to death up here when temps hit -30!

 

[Thucydides]

Here's a question I never see asked...and a pretty important one...
What the HECK is PG even made from...lets start there.

From Wikipedia article "Propylene glycol," subhead "Production":

Industrially, propylene glycol is produced from propylene oxide, and global capacity in 1990 was 900,000 tonnes per year. Different manufacturers use either non-catalytic high-temperature process at 200 °C (392 °F) to 220 °C (428 °F), or a catalytic method, which proceeds at 150 °C (302 °F) to 180 °C (356 °F) in the presence of ion exchange resin or a small amount of sulfuric acid or alkali.

Final products contain 20% 1,2-propanediol, 1.5% of dipropylene glycol and small amounts of other polypropylene glycols. Further purification produces finished industrial grade or USP/JP/EP/BP grade propylene glycol that is typically 99.5% or greater. Propylene glycol can also be converted from glycerol, a biodiesel byproduct.​

Propylene oxide is made by oxidizing propylene. Both of these are petrochemicals, and neither is consumable by humans. Polypropylene is also made from propylene.

So it's made from hydrocarbons; i.e., basically, it's derived from petroleum.

 

[filter]

Here's a question I never see asked...and a pretty important one...
What the HECK is PG even made from...lets start there.

PG is made of dinosaurs

 

[Unforeseen]

Moved to General e-liquid Discussion

 

[zapped]

PG is made of dinosaurs

Im vaping Barney? RIGHT ON!!!

 

[CarbonThief]

Which is probably why so many people go the 100% VG route, can't stand that happy family BS I guess.

 

[Zorena]

Thank you! This is exactly the information I have been looking for about PG.