C.F.R. » Title 27 » CHAPTER I—ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY › SUBCHAPTER A—ALCOHOL › PART 21—FORMULAS FOR DENATURED ALCOHOL AND RUM › Subpart E—Specifications for Denaturants

27 C.F.R. § 21.108-T

Ethyl tertiary butyl ether

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(a) Purity. ≥95.0 percent.

(b) Color. Colorless to light yellow.

(c) Odor. Terpene-like.

(d) Specific gravity at 20 °C. 0.70 to 0.80.

(e) Boiling point ( °C). 73.

[T.D. TTB-140, 81 FR 59462, Aug. 30, 2016]