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Thymol (also known as 2-isopropyl-5-methylphenol, IPMP), C 10 H 14 O, is a natural monoterpenoid phenol derivative of p-Cymene, isomeric with carvacrol.It occurs naturally in the oil of thyme, and it is extracted from Thymus vulgaris (common thyme), ajwain, [4] and various other plants as a white crystalline substance of a pleasant aromatic odor and strong antiseptic properties.
2-methylphenol 3-methylphenol 4-methylphenol Systematic name: 2-methylbenzenol ... 2.4 g/100 ml 1.9 g/100 ml soluble in strongly alkaline water Melting point:
synthetic vitamin E by methylation to give 2,3,6-trimethylphenol [3] antiseptics, such as amylmetacresol; a solvent for polymers. For example, polyaniline is cast from a solution of m-cresol to form a polyaniline film with a superior conductivity than polyaniline alone. This phenomenon is known as secondary doping. [4] preservatives in some ...
ch 3 c 6 h 4 so 3 h + 2 naoh → ch 3 c 6 h 4 oh + na 2 so 3 + h 2 o Other methods for the production of p -cresol include chlorination of toluene followed by hydrolysis. In the cymene-cresol process, toluene is alkylated with propene to give p -cymene , which can be oxidatively dealkylated in a manner similar to the cumene process .
4-Isopropylphenol is an organic compound with the formula (CH 3) 2 CHC 6 H 4 OH.The molecule consists of an isopropyl group affixed to the para (p-) position of phenol.The compound, a white solid, is produced by the alkylation of phenol with propylene and is relevant to the production of the commodity chemical bisphenol A (BPA).
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The Food and Drug Administration's new rules on "healthy" food labels are voluntary and are scheduled to take effect at the end of February.
The chemical synthesis of BHT in industry has involved the reaction of p-cresol (4-methylphenol) with isobutylene (2-methylpropene), catalyzed by sulfuric acid: [11] CH 3 (C 6 H 4)OH + 2 CH 2 =C(CH 3) 2 → ((CH 3) 3 C) 2 CH 3 C 6 H 2 OH. Alternatively, BHT has been prepared from 2,6-di-tert-butylphenol by hydroxymethylation or aminomethylation ...