Fennel Oil
(fen' el oyl).
DEFINITION
Fennel Oil is the volatile oil distilled with steam from the dried, ripe fruit of Foeniculum vulgare Mill. (Fam. Apiaceae).
[Note—If solid material has separated, carefully warm the Fennel Oil until it is completely liquefied, and mix before using. ]
IMPURITIES
• Heavy Metals, Method II 
231
:
NMT 40 µg/g
231:
NMT 40 µg/g
SPECIFIC TESTS
• Specific Gravity 841:
0.953–0.973
841:
0.953–0.973
• Congealing Temperature 651:
NLT 3
651:
NLT 3
• Optical Rotation, Angular Rotation 781A:
+12 to +24
781A:
+12 to +24
• Refractive Index 831:
1.528–1.538 at 20
831:
1.528–1.538 at 20
• Solubility in 90% Alcohol:
1 volume dissolves in 1 volume of 90% alcohol.
ADDITIONAL REQUIREMENTS
• Packaging and Storage:
Preserve in tight containers.
• Labeling:
The label states the Latin binomial and, following the official name, the part of the plant source from which the article was derived. The label also states that if solid material has separated, carefully warm Oil until it is completely liquefied, and mix before using.
Auxiliary Information—
Please check for your question in the FAQs before contacting USP.
| Topic/Question | Contact | Expert Committee |
|---|---|---|
| Monograph | Maged H. Sharaf, Ph.D.
Principal Scientific Liaison 1-301-816-8318 |
(DS2010) Monographs - Dietary Supplements |
USP35–NF30 Page 1804
Pharmacopeial Forum: Volume No. 27(4) Page 2797