27 C.F.R. § 21.128 Sodium (metallic).
Title 27 - Alcohol, Tobacco Products and Firearms
(a) Color. Silvery-white (metallic luster) when freshly cut. (b) Identification test. Clean a platinum wire by dipping it in concentrated hydrochloric acid and holding it over a Bunsen burner until the flame is no longer colored. Moisten the wire loop with hydrochloric acid and dip it into the sample. Hold the wire in the Bunsen flame and note the color. Sodium produces a golden yellow flame; not observed when viewed through a cobalt glass. (c) Purity. Technical grade or better. [T.D. ATF–133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF–442, 66 FR 12854, Mar. 1, 2001]
Title 27: Alcohol, Tobacco and Firearms
PART 21—FORMULAS FOR DENATURED ALCOHOL AND RUM
Subpart E—Specifications for Denaturants
§ 21.128 Sodium (metallic).
