[Code of Federal Regulations] [Title 27, Volume 1] [Revised as of April 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 27CFR21.105] [Page 495] 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. 21.105 Citronella oil, natural. (a) Java type: (1) Alcohol content (as Geraniol). Not less than 85 percent by weight. (2) Aldehyde content (as Citronellal). Not less than 30 percent by weight. (3) Refractive index at 20 [deg]C. 1.4660 to 1.4745. (4) Specific gravity at 25 [deg]/25 [deg]C. 0.875 to 0.893. (5) Odor. Characteristic odor. (b) Ceylon type: (1) Alcohol content (as Geraniol). Not less than 55 percent by weight. (2) Aldehyde content (as Citronellal). Not less than 7 percent by weight. (3) Refractive index at 20 [deg]C. 1.4790 to 1.4850. (4) Specific gravity at 25 [deg]/25 [deg]C. 0.891 to 0.904. (5) Odor. Characteristic odor. [T.D. ATF-133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF-442, 66 FR 12854, Mar. 1, 2001]