Physical Characteristic

Specification

Appearance

A yellow to yellowish brown liquid.

Odor

odour, that of orange

Identification.

First identification B.

Second identification A.

Complying with test

Thin-layer chromatography

Relative density @ 25°C

0.842 to 0.848 g,

Refractive index @ 20°C

1.472 to 1.476,

Optical rotation @ 20°C

+94° to +99°,

Residue on evaporation

1.0 to 5.0%

Fatty oils and resinified essential oils

It complies with the test.

Solubility

Soluble at 20°, in 7 parts of ethanol (90%)

Content of aldehydes

Not less than 1.0% w/w,

Assay by GC

limonene

94.0 to 99.0%