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

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Five gallons of ethyl ether.

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

031. Photographic film and emulsions.034. Cellulose intermediates and industrial collodions.052. Inks (not including meat branding inks).241. Collodion, U.S.P.311. Ethyl cellulose compounds (dehydration).332. Processing miscellaneous food products.342. Processing glandular products, vitamins, hormones, and yeasts.343. Processing antibiotics and vaccines.344. Processing medicinal chemicals (including alkaloids).430. Sterilizing and preserving solutions.481. Photoengraving and rotogravure solutions and dyes.485. Miscellaneous solutions.

(2) As a raw material:

522. Ethyl chloride.523. Other ethyl esters.561. Ethyl ether.562. Other ethers.571. Ethylene dibromide.572. Ethylene gas.575. Drugs and medicinal chemicals.579. Other chemicals.580. Synthetic rubber.

(3) Miscellaneous uses:

812. Product development and pilot plant uses (own use only).[T.D. ATF-133, 48 FR 24673, June 2, 1983, as amended by T.D. TTB-140, 81 FR 59461, Aug. 30, 2016]