• British Pharmacopoeia Volume V
  • Appendices
  • Appendix I A. General Reagents

Thymol
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Thymol 2-Isopropyl-5-methylphenol; C10H14O = 150.2 (89-83-8)

General reagent grade of commerce.

Colourless crystals; melting point, about 50°.

Thymol used in gas chromatography complies with the following test.

Assay Examine by the method for gas chromatography in the monograph for Peppermint Oil using the reagent being examined as the test solution. In the chromatogram obtained, the area of the principal peak is not less than 95.0% by normalisation.