Our PG - propylene-glycol - is USP Food Grade.
Packaged in HDPE bottles which have a better chemical resistance profile so you can store your liquid longer without worrying about chemicals leeching out of the plastic.
Propylene-Glycol (PG). Propylene glycol is an organic compound with the chemical formula CH₃CHCH₂OH. It is a viscous, colorless liquid, which is nearly odorless but possesses a faintly sweet taste.