(a) Specific gravity at 25 °C. 0.890 to 0.910.

(b) Refractive index at 20 °C. 1.455 to 1.465.

(c) Esters as menthyl acetate. 5 percent minimum.

(d) Menthol (free and esters). 5 percent minimum.

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


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