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Thymol Safety Data

This page is credited in full to Dave Cushman who created it. His voice is expressed in black colour text and any additions or comments in blue belong to myself. Credit: Dave Cushman’s website.

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Thymol Safety Data

Safety information from various sources regarding thymol crystals that are use for beekeeping purposes.

There is some confusion in the application of the words ‘thymol’ and ‘thyme oil’. I use the word ‘thymol’ in this document to mean a common phenol that exists as a white crystalline solid at room temperature. Formula: C10H14O and molecular structure as indicated in the diagram at right.
Molecular Structure of Thymol

Thyme oils come from several different plants, some of which contain more than one type of essential oil.

Trachyspermum ammi (Ajowan)
Thymus (chemotype thymol)
Thymus (chemotype carvacrol)
Thymus serpyllum (Wild thyme or mother of thyme)
Thymus vulgaris (chemotype thymol)
Thymus vulgaris (chemotype linalol)

Thymol is only very slightly soluble in water, but has a strong affinity for fats and oils (Lipids). The degree of this solubility is represented by the following Compound Partition Coefficients (P or p):-

From this table you can see that the larger the number, the more soluble a compound is in a lipid. More details

Other names by which Thymol is known:-

2 isopropyl 5 methylphenol
mint flavouring
6 isopropyl m cresol
3 hydroxy p cymene
isopropyl cresol
4 methyl 2 hydroxy isopropyl benzene

CAS No:- 89-83-8
EC No:- 201-944-8
Physical data

Appearance:- White crystalline solid or powder with a pungent odour.
Melting point = 49

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