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Physical Characteristic
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Specification
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Appearance
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Clear, yellow or very dark reddish-brown,
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Odor
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characteristic, aromatic, spicy odour, reminiscent of thymol.
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Identification.
First identification B.
Second identification A.
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Complying with test
Thin-layer chromatography
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Relative density @ 25°C
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0.915 to 0.935.
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Refractive index @ 20°C
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1.490 to 1.505.
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Fatty oils and resinified essential oils
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It complies with the test.
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Solubility
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Miscible with alcohol and with methylene chloride.
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Residue on evaporation
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1.0 to 5.0%
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Assay by GC
b-myrcene
g-terpinene
p-cymene
linalool
terpinen-4-ol
thymol
carvacrol
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1.0 to 3.0%
5.0 to 10.0%
15 to 28.0%
4.0 to 6.5%
0.2 to 2.5%
36.0 to 55.0%
1.0 to 4.0%
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