[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: 27CFR21.120] [Page 553] 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. 21.120 Nitropropane, mixed isomers of. (a) Nitropropane content. A minimum of 94 percent by weight. (b) Total nitroparaffin content. A minimum of 99 percent by weight. (c) Distillation range. 119[deg] to 113 [deg]C. (d) Specific gravity at 20[deg]/20 [deg]C. 0.992 to 1.003. [T.D. ATF-133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF-442, 66 FR 12854, Mar. 1, 2001]