Search results
Results from the WOW.Com Content Network
Calone, a derivative of 4-methylcatechol, is known in the fragrance industry as "watermelon ketone" for its distinctive odor. [3]The brand of low-temperature coke used as a smokeless fuel Coalite obtains homocatechol from ammoniacal liquor by solvent extraction, distillation and crystallisation.
C 6 H 4 (OH) 2 + XCl 2 → C 6 H 4 (O 2 X) + 2 HCl where X = PCl or POCl; SO 2; CO. Basic solutions of catechol react with iron(III) to give the red [Fe(C 6 H 4 O 2) 3] 3−. Ferric chloride gives a green coloration with the aqueous solution, while the alkaline solution rapidly changes to a green and finally to a black color on exposure to the ...
Guaiacol (/ ˈ ɡ w aɪ ə k ɒ l /) is an organic compound with the formula C 6 H 4 (OH)(OCH 3).It is a phenolic compound containing a methoxy functional group. Guaiacol appears as a viscous colorless oil, although aged or impure samples are often yellowish.
Piperonal can be prepared by the oxidative cleavage of isosafrole or by using a multistep sequence from catechol or 1,2-methylenedioxybenzene. Synthesis from the latter chemical is accomplished through a condensation reaction with glyoxylic acid followed by cleaving the resulting α-hydroxy acid with an oxidizing agent .
Creosol is a chemical compound with the molecular formula C 8 H 10 O 2. It is one of the components of creosote . Compared with phenol , creosol is a less toxic disinfectant .
The biodegradation of p-Chlorocresol [8] is done in the liver, and then excreted primarily via the kidneys or in smaller amounts through the lungs. In facultative Thauera sp. strain DO, p-Chlorocresol was degraded aerobically either by dehalogenation followed by catechol degradation pathway, or methyl oxidation to 4-chlorobenzoate. [9]
This residue contains a few percent by weight of phenol and cresols. Industrially, p-cresol is currently prepared mainly by a two-step route beginning with the sulfonation of toluene: [4] CH 3 C 6 H 5 + H 2 SO 4 → CH 3 C 6 H 4 SO 3 H + H 2 O. Basic hydrolysis of the sulfonate salt gives the sodium salt of the cresol: CH 3 C 6 H 4 SO 3 H + 2 ...
The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C.