ISO 3475:1975

Oil of aniseed

The Standard specifies the following characteristics of the oil. Appearance: Clear liquid or crystalline mass. Colour: Colourless to pale yellow, when liquid. Odour: Characteristic, recalling than of anethole. Relative density at 20/20 °C: 0,980 – 0,990. Refractive index at 20 °C: 1,5520 – 1,5590. Optical rotation at 20 °C: Range from – 2 to + 2 . Solubility in 90 % (V/V) ethanol at 20 °C: 1 volume in 3 volumes. Freezing point: 15 – 19,5 C.