27 CFR § 21.44
Formula No. 19
April 24, 2020
(a) Formula. To every 100 gallons of alcohol add:
One hundred gallons of ethyl ether.
(b) Authorized uses.
(1) As a solvent:
031. Photographic film and emulsions.
034. Cellulose intermediates and industrial collodions.
241. Collodion, U.S.P.
(2) Miscellaneous uses:
812. Product development and pilot plant uses (own use only).
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