21 CFR 172.820 - Polyethylene glycol (mean molecular weight 200-9,500). | LII / Legal Information In
(1) The analytical method prescribed in the National Formulary XV (1980), page 1244, for polyethylene glycol 400 shall be used to determine the total ethylene and diethylene glycol content of polyethylene glycols having mean molecular weights of 450 or hi...