Anti-freeze ratio
Hey All—traveling to the great frozen Northeast in our B-van and expect temps in the 20’s at night. Would like to continue to use the fresh water system and want to add RV antifreeze to the tank. W...
Forum Discussion
wa8yxm wrote:
One thing.. Though unlike Automotive Antifreeze RV antifreeze is NOT TOXIC. it is still nasty stuff. both taste and the effect it will have on you in quanity. (it is a lower level of poison) So I'd never add it to water I plan on drinking.
The propylene glycol used in RV antifreeze is non-toxic and rated as GRAS, “Generally Recognized As Safe”, by the FDA. It is tasteless and practically odorless.
Propylene glycol is a synthetic liquid substance that absorbs water. Propylene glycol is also used to make polyester compounds, and as a base for de-icing solutions. Propylene glycol is used by the chemical, food, and pharmaceutical industries as an antifreeze when leakage might lead to contact with food. The Food and Drug Administration (FDA) has classified propylene glycol as an additive that is “generally recognized as safe” for use in food. It is used to absorb extra water and maintain moisture in certain medicines, cosmetics, or food products. It is a solvent for food
colors and flavors, and in the paint and plastics industries. Propylene glycol is also used to create artificial smoke or fog used in fire-fighting training and in theatrical productions. Other names for propylene glycol are 1,2-dihydroxypropane, 1,2-propanediol, methyl glycol, and trimethyl glycol. Propylene glycol is clear, colorless, slightly syrupy liquid at room temperature. It may exist in air in the vapor form, although propylene glycol must be heated or briskly shaken to produce a vapor. Propylene glycol is practically odorless and tasteless.
Propylene Glycol - CDC Public Health Statement
