The freezing level of h2o is depressed when combined with propylene glycol. It truly is applied as aircraft de-icing fluid.[4][14] H2o-propylene glycol mixtures dyed pink to indicate the combination is fairly nontoxic are offered beneath the identify of RV or maritime antifreeze. Propylene glycol is commonly utilized instead for ethylene http://allanh297vae9.blogs100.com/profile