Foo Fluid Base 100%PG 500ml Is best suited to mix with flavors to make your own vaporizer liquid. 1,2-Propanediol (1,2-propylene glycol), also known as propylene glycol, is a clear, colorless, almost odorless and highly hygroscopic liquid. 1,2-Propanediol belongs to the polyvalent alkanols and is chiral at C2, so there is an (R)-enantiomer and an (S)-enantiomer. Unless explicitly stated otherwise, all data in this article refer to the 1:1 mixture (racemate) of the (R)-enantiomer and the (S)-enantiomer. 1,2-Propanediol is present in almost all tobacco products as an additive.[18] Propanediol, together with glycerol, is added to both cigarette tobacco and water pipe tobacco. A press release from the German Federal Institute for Risk Assessment (BfR) warns of possible health hazards that could result from the ingestion of these substances with tobacco smoke in waterpipes.[19] Direct references to robust studies can be found in the BfR's scientific publication.[20] Propanediol is used, along with glycerol, as the main ingredient in liquids of electronic cigarettes. 100% PG 500ml EAN 7630500001