ATF Ruling 79-18
Denaturers have asked the Director, Bureau of Alcohol, Tobacco and Firearms, whether other denaturing material may be authorized for use in preparation of specially denatured alcohol Formula 38-B.
Under the provisions of 27 CFR 212.65, pertaining to formulas for denaturing alcohol, the Director may authorize the use of substitute denaturants where such substitutions will not jeopardize the revenue.
Held, the Director has determined that Artificial Cassia Oil No. 6320, Denaturing Grade, manufactured by Ungerer & Company, 161 Avenue of the Americas, New York, New York 10013, is a satisfactory substitute for Cinnamon Oil (Cassia Oil), U.S.P., and is authorized for the production of specially denatured alcohol Formula 38-B if the following specifications are met for the Artificial Cassia Oil No. 6320:
at 25°/25°C............1.050-1.070 Refractive
Index at 20°C..........1.6142-1.6174
Cinnamic Aldehyde......80% minimum
27 CFR 212.48 and 27 CFR 212.65.