Code of Federal Regulations · Section
§ 21.121 — Peppermint Oil, Terpeneless
27 C.F.R. § 21.121
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(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.
Authorizing Statute
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Denaturing materials26 U.S.C. § 5242