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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.
Turpentine may alternatively be extracted from destructive distillation of pine wood, [3] such as shredded pine stumps, roots, and slash, using the light end of the heavy naphtha fraction (boiling between 90 and 115 °C or 195 and 240 °F) from a crude oil refinery. Such turpentine is called wood turpentine.
Some of these compounds have beneficial properties. In particular, thymol has been historically used as an antibiotic and antiseptic, especially in traditional medicine. [16] Oil of thyme, the essential oil of common thyme, contains 20–54% thymol. [17] Thymol is an active ingredient in various commercially produced mouthwashes, such as ...
Limonene and perillyl alcohol are used in cleaning products. [13] [14] Many monoterpenes are used as food flavors and food additives, such as bornyl acetate, citral, eucalyptol, menthol, hinokitiol, camphene and limonene. [15] [16] Menthol, hinokitiol and thymol are also used in oral hygiene products. Thymol also has antiseptic and disinfectant ...
The black liquor contains more than half of the energy content of the wood fed into the digester of a kraft pulp mill. [11] It is normally concentrated to 65 - 80% by multi-effect evaporators and burned in a recovery boiler to produce energy and recover the cooking chemicals. The viscosity increases as the concentration goes up.
Wood chemistry, whose primary focus is the analysis of the chemical constituents comprising wood, with specific emphasis on cellulose, lignin, hemicelluloses, and extractives, as well as on the various products derived from these components. It is also explores potential uses for pulp and paper production, the utilization of wood and wood waste ...
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They are the largest class of plant secondary metabolites, representing about 60% of known natural products. [3] Many terpenoids have substantial pharmacological bioactivity and are therefore of interest to medicinal chemists. [4] Plant terpenoids are used for their aromatic qualities and play a role in traditional herbal remedies.