U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
(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.
