What Is Thymol?

5-methyl-2-isopropylphenol (English name 5-methyl-2-Isopropylphenol), also known as 2-isopropyl-5-methylphenol (2-Isopropyl-5-methyl-phenol), commonly known as Baili Phenol, thymol, thymol, thymol. At room temperature, it is colorless crystal or colorless crystalline powder with the smell of thyme or thyme. Slightly soluble in water, soluble in glacial acetic acid and paraffin oil, but also soluble in ethanol, chloroform, ether and olive oil. Irritating to skin, eyes, and mucous membranes. Naturally present in Labiata plants Thymus serpyllum L., Thyme T. vulgaris L., Oregano Origanum vulgare L., Cymbidium Dracocephalum moldavicum L., Umbelliferous plant crude fruit celery Trachyspermum ammi (L. ) Sprague Seed. It is used to make perfumes, drugs and indicators, and is also commonly used for skin mold and ringworm. The molecular formula is C10H14O. ^[1-3]
5--2- Synonym thymol generally refers to 5-methyl-2-isopropylphenol

Chinese name: 5-methyl-2-isopropylphenol

Foreign name: 5-methyl-2-Isopropylphenol
Commonly known: Thymol

5-methyl-2-isopropylphenol physical properties

[Appearance] It is colorless crystal or colorless crystal powder at normal temperature, with the smell of thyme or thyme.

Boiling point 233

[Melting point] (° C) 51.5

[Flash point] (closed) 110

[Density] g / cm ³ 0.9699 (20 )

[Refractive index] n _D ²⁰ 1.5227

[Solubility] Slightly soluble in water, soluble in glacial acetic acid and paraffin oil, but also soluble in ethanol, chloroform, ether and olive oil. At 25 ° C, 1g of 5-methyl-2-isopropylphenol can be dissolved in 1ml of ethanol, 1.5ml of ether, 0.7ml of chloroform, 1.7ml of olive oil, and about 1000ml of water.

[Stability] stable

5-methyl-2-isopropylphenol Properties

[CAS registration number] 89-83-8

[Molecular weight] 150.22

[Molecular formula and structural formula] The molecular formula is C ₁₀ H ₁₄ O, and the chemical structural formula is as follows:

[Common chemical reactions] It has some reaction properties of phenol and toluene, such as substitution reaction on benzene ring and many reactions of hydroxyl group.

[Incompatibility] Strong oxidant, strong acid.

[Polymerization hazard] No polymerization hazard.

5-methyl-2-isopropylphenol main uses

It is mainly used for making flavor. Thymol is one of 599 additives in cigarettes. It is used as medicine and indicator, and it is also commonly used for skin mold and ringworm. Indicator for the determination of titanium, antimony, arsenic, nitrate, etc. As a preservative, it is used to control the number of Varroa mites on bee nests, book binding, and added to trifluorochlorobromoethane as an anesthetic.

5-methyl-2-isopropylphenol manufacturing method

It is prepared from m-methylphenol, fuming sulfuric acid and isopropanol as raw materials through two steps of sulfonation and alkylation.

[Reference quality index] Reference enterprise standards are as follows:

project

Analytical pure

Chemically pure

Content%

Melting point

Ignition residue (as sulfate)

98.0

49.5-52

0.05

98.0

49-52

0.05

5-methyl-2-isopropylphenol toxicity and environmental impact

This product is irritating to the skin, eyes and mucous membranes. Attention should be paid to the environmental pollution of by-products during the production process.

5-methyl-2-isopropylphenol packaging, storage and transportation

Packed in an iron drum lined with plastic film. Stored in a cool, dry, ventilated and dark place, away from the heat source of fire. Avoid mixing with strong acids and strong oxidants.