Anonymous posted this question in this post: What’s the difference between polysorbate 80 & 20? Polysorbates are ethoxylates of fatty acids esterified with anhydrosorbitol. Polysorbate 20 is a polyoxyethylene derivative of sorbitan monolaurate whereas polysorbate 80 is a polyoxyethylene derivative of sorbitan and oleic acid. And as much as I love chemistry, I realize this really…