§21.96. Ammonia, aqueous.
27 C.F.R. § 21.96
Alkalinity. Strongly alkaline to litmus.
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
Color. Colorless liquid.
Non-volatile residue. 2 mg maximum. Dilute a portion of the sample with 1 1/2 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.
Odor. Characteristic (exceedingly pungent).
Specific gravity at 20 °/4 °C. 0.8920 to 0.9010.
Notes, amendments, and revision history
Amendments
[T.D. ATF-133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF-442, 66 FR 12854, Mar. 1, 2001]
Authority
Authority: 5 U.S.C. 552(a); 26 U.S.C. 5242, 7805.
Source
Source: T.D. ATF-133, 48 FR 24673, June 2, 1983, unless otherwise noted.
Amendments
[T.D. ATF-133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF-442, 66 FR 12854, Mar. 1, 2001]