27 CFR § 21.106-T - Distilled lime oil (Citrus aurantifolia).

(a) Specific gravity at 25 °C. 0.850 to 0.870.

(b) Refractive index at 20 °C. 1.4740 to 1.4780.

(c) Optical rotation at 20 °C. +30° to +50°.

(d) Aldehyde content (as citral). 0.5 to 3.0 percent.

(e) Terpene content (as limonene). 45 percent minimum.

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