Benzene, 1-methoxy-4-(1-propenyl)-, (E)-.
» Anethole is obtained from Anise Oil and other sources, or is prepared synthetically.
Packaging and storage Preserve in tight, light-resistant containers.
Labeling Label it to indicate whether it is obtained from natural sources or is prepared synthetically.
Specific gravity 841: between 0.983 and 0.988.
Congealing temperature 651: not lower than 20.
Distilling range, Method I 721: between 231 and 237, a correction factor of 0.063 per mm being applied as necessary.
Angular rotation 781A: between 0.15 and +0.15.
Refractive index 831: between 1.557 and 1.561.
Heavy metals, Method II 231: 20 µg per g.
Aldehydes and ketones Shake 10 mL with 50 mL of a saturated solution of sodium bisulfite in a graduated cylinder, and allow the mixture to stand for 6 hours: no appreciable diminution in the volume of Anethole occurs, and no crystalline deposit separates.
Limit of phenols Shake 1 mL with 20 mL of water, and allow the liquids to separate. Pass the water layer through a filter paper previously moistened with water, and to 10 mL of the filtrate add 3 drops of ferric chloride TS: no purple or purplish color is produced.
Auxiliary Information Please check for your question in the FAQs before contacting USP.Chromatographic Column
USP32NF27 Page 1166
Chromatographic columns text is not derived from, and not part of, USP 32 or NF 27.