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T.D. ATF-133, 48 FR 24673, June 2, 1983, unless otherwise noted.
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Subscribe to: 27 CFR 21.96
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Nomenclature changes to part 21 appear by T.D. ATF-435, 66 FR 5475, Jan. 19, 2001.
Nomenclature changes to part 21 appear by 81 T.D. TTB-140, 81 FR Aug. 30, 2016.
(a) Alkalinity. Strongly alkaline to litmus.
(b) Ammonia content. 27 to 30 percent by weight. Accurately weigh a glass-stoppered flask containing 25 mL of water, add about 2 mL of the sample, stopper, and weigh again. Add methyl red indicator, and titrate with 1 N sulfuric acid. Each mL of 1 N sulfuric acid is equivalent to 17.03 mg of NH3
(c) Color. Colorless liquid.
(d) Non-volatile residue. 2 mg maximum. Dilute a portion of the sample with 11⁄2 times its volume of distilled water. Evaporate 10 mL of this product to dryness in a tared platinum or porcelain dish. Dry residue at 105 °C. for 1 hour, cool and weigh.
(e) Odor. Characteristic (exceedingly pungent).
(f) Specific gravity at 20 °/4 °C. 0.8920 to 0.9010.
[T.D. ATF-133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF-442, 66 FR 12854, Mar. 1, 2001]