[Code of Federal Regulations]
[Title 27, Volume 1]
[Revised as of January 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 27CFR21.128]

[Page 555]
 
            TITLE 27--ALCOHOL, TOBACCO PRODUCTS AND FIREARMS
 
 CHAPTER I--ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE 
                                TREASURY
 
PART 21_FORMULAS FOR DENATURED ALCOHOL AND RUM--Table of Contents
 
                Subpart E_Specifications for Denaturants
 
Sec.  21.128  Sodium (metallic).

    (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]