CFR - Code of Federal Regulations Title 21
Sep 19, 2019·(a) Propylparaben is the chemical propyl p-hydroxybenzoate. It is produced by the n-propanol esterification of p-hydroxybenzoic acid in the presence of sulfuric acid, with subsequent distillation. (b) The ingredient meets the specifications of the "Food Chemicals Codex," 3d Ed. (1981), p. 258, which is incorporated by reference.