21.44—Formula No. 19.

(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).