27 CFR § 21.77 - Formula No. 40-C.

---
identifier: "/us/cfr/t27/s21.77"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "27 CFR § 21.77 - Formula No. 40-C."
title_number: 27
title_name: "Alcohol, Tobacco Products and Firearms"
section_number: "21.77"
section_name: "Formula No. 40-C."
chapter_name: "ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY"
subchapter_number: "A"
subchapter_name: "ALCOHOL"
part_number: "21"
part_name: "FORMULAS FOR DENATURED ALCOHOL AND RUM"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "5 U.S.C. 552(a); 26 U.S.C. 5242, 7805."
regulatory_source: "T.D. ATF-133, 48 FR 24673, June 2, 1983, unless otherwise noted."
cfr_part: "21"
---


# 21.77 Formula No. 40-C.

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

Three gallons of *tert*-butyl alcohol.

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

111. Hair and scalp preparations.

112. Bay rum.

113. Lotions and creams (hand, face, and body).

114. Deodorants (body).

121. Perfumes and perfume tinctures.

122. Toilet waters and colognes.

141. Shampoos.

142. Soaps and bath preparations.

210. External pharmaceuticals, not U.S.P. or N.F.

410. Disinfectants, insecticides, fungicides, and other biocides.

450. Cleaning solutions (including household detergents).

470. Theater sprays, incense, and room deodorants.

485. Miscellaneous solutions.

(2) Miscellaneous uses.

812. Product development and pilot plant uses (own use only).

(c) *Conditions governing use.* This formula shall be used only in the manufacture of products which will be packaged in pressurized containers in which the liquid contents are in intimate contact with the propellant and from which the contents are not easily removable in liquid form.