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16254 Sigma-Aldrich

Thymol

meets analytical specification of Ph. Eur., BP, NF, 99-101%

Synonym: 2-Isopropyl-5-methylphenol, 5-Methyl-2-(1-methylethyl)phenol, 5-Methyl-2-isopropylphenol, IPMP

  • CAS Number 89-83-8

  • Linear Formula 2-[(CH3)2CH]C6H3-5-(CH3)OH

  • Molecular Weight 150.22

  •  Beilstein Registry Number 1907135

  •  EC Number 201-944-8

  •  MDL number MFCD00002309

  •  PubChem Substance ID 57647553

  •  eCl@ss 39023311

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Properties

vapor pressure   1 mmHg ( 64 °C)
InChI Key   MGSRCZKZVOBKFT-UHFFFAOYSA-N
assay   99-101%
quality   meets analytical specification of Ph. Eur., BP, NF
impurities   acidic reac. impurities, complies
  organic volatile impurities, complies (GC)
  related subst., complies (GC)
  residual solvents, complies
  ≤0.05% non-volatile matter
bp   232 °C(lit.)
mp   48-51 °C(lit.)
  48-51 °C
density   0.965 g/mL at 25 °C(lit.)
suitability   complies for appearance of solution

Description

Application

Thymol has been used to study:
• the effect of thymol on the viability of Bacillus cereus.
• its effect on growth and production of citrinin from Penicillium citrinum.
• the effect of thymol on insect and human γ-aminobutyric acid (GABA) receptors.

Biochem/physiol Actions

Thymol (5-methyl-2-isopropylphenol), a monocyclic phenolic compound, is a vital constituent of Thymus vulgaris essential oil. It has been used in dental preparations to kill odor-producing bacteria. Thymol serves as a preservative through its antimicrobial and antioxidant properties. In addition, thymol also has molluscicidal and insecticidal properties. Thymol acts as an allosteric modulator of human γ-aminobutyric acid (GABAA) receptors.

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Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN2430 - class 8 - PG 3 - EHS - Alkylphenols, solid, n.o.s., HI: A,S
WGK Germany 
2
RTECS 
XP2275000
Flash Point(F) 
213.8 °F
Flash Point(C) 
101 °C
Protocols & Articles
Peer-Reviewed Papers
15

References

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