Section 21.105 - Citronella oil, natural(a)Java type:(1)Alcohol content (as Geraniol). Not less than 85 percent by weight.(2)Aldehyde content (as Citronellal). Not less than 30 percent by weight.(3)Refractive index at 20 °C. 1.4660 to 1.4745.(4)Specific gravity at 25 °/25 °C. 0.875 to 0.893.(5)Odor. Characteristic odor.(b)Ceylon type:(1)Alcohol content (as Geraniol). Not less than 55 percent by weight.(2)Aldehyde content (as Citronellal). Not less than 7 percent by weight.(3)Refractive index at 20 °C. 1.4790 to 1.4850.(4)Specific gravity at 25 °/25 °C. 0.891 to 0.904.(5)Odor. Characteristic odor.T.D. ATF-133, 48 FR 24673, 6/2/1983. Redesignated by T.D. ATF-442, 66 FR 12854, 3/1/2001