Regulations last checked for updates: Feb 10, 2026

Title 27 - Alcohol, Tobacco Products and Firearms last revised: Jan 22, 2026
§ 21.72 - Formula No. 39-C.

(a) Formula. To every 100 gallons of alcohol add:

One gallon of diethyl phthalate.

(b) Authorized uses. (1) As a solvent:

111. Hair and scalp preparations. 113. Lotions and creams (hand, face, and body). 114. Deodorants (body). 121. Perfumes and perfume tinctures. 122. Toilet waters and colognes. 142. Soaps and bath preparations. 470. Theater sprays, incense, and room deodorants.

(2) Miscellaneous uses:

812. Product development and pilot plant uses (own use only).
source: T.D. ATF-133, 48 FR 24673, June 2, 1983, unless otherwise noted.
cite as: 27 CFR 21.72