27 CFR § 21.105-T1
Cornmint oil (Mentha arvensis and Mentha canadensis)
April 24, 2020
(a) Specific gravity at 25 °C. 0.895 to 0.905.
(b) Refractive index at 20 °C. 1.4580 to 1.4590.
(c) Optical rotation at 20 °C. −18° to −36°.
(d) Alcohol content (as menthol). 65 percent minimum.
(e) Ketone content (as menthone). 5 percent minimum.
[T.D. TTB-140, 81 FR 59462, Aug. 30, 2016]
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