27 CFR § 21.108-T - Ethyl tertiary butyl ether.

(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]