Resorcinol


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Related to Resorcinol: hydroquinone, resorcinol test

resorcinol

[rə′zȯrs·ən‚ȯl]
(organic chemistry)
C6H4(OH)2 Sweet-tasting, white, toxic crystals; soluble in water, alcohol, ether, benzene, and glycerol; melts at 111°C; used for resins, dyes, pharmaceuticals, and adhesives, and as a chemical intermediate. Also known as resorcin.

Resorcinol

 

(also resorcin, m-dihydroxybenzene), colorless crystals with a sweetish taste that are readily soluble in water, alcohol, and ether. Resorcinol has a melting point of 110.8°C and a boiling point of 280.8°C.

Resorcinol is one of the simplest diatomic phenols, comparable to hydroquinone and pyrocatechol. It is produced industrially usually by alkaline fusion of m-benzenedisulfonic acid. It is used in the manufacture of resorcinol-aldehyde resins and azo dyes—for example, resorcinol yellow is obtained by the interaction of resorcinol with diazotized sulfanilic acid. Fluorescein, stabilizers, and plastifiers of macromolecular compounds, as well as explosives and medicinal preparations such as 4-hexylresorcinol (an anthelmintic), are also manufactured from resorcinol.

In analytical chemistry resorcinol is used to make colorimet-ric determinations of furfural, lignin, sugars, and elements such as zinc and lead. In medicine it is used in unguents and solutions to treat skin diseases.

References in periodicals archive ?
The mixture of Schiff-base monomer 0.903g (0.03 mol), resorcinol 1.1g (0.01 mol) and 100ml of formaldehyde was refluxed for 5 h.
Phenolic compound/flavonoid Amount (%) 1 Caffeic acid [1] 3.305 2 Resorcinol [2] 0.008 3 Vanillic acid [6] 0.063 4 p-Coumaric acid [7] 0.034 5 Ferulic acid [9] 0.054 6 Vanillin [10] 0.181 7 Veratric acid [11] 0.015 8 Myristicin [4] 0.013 9 Coumarin [5] 0.004 10 Cinnamic acid 0.042 Table 2: Validation of the liquid chromatographic method.
Caption: Figure 3.--After 12 cycles of wet-freeze-dry aging, the interface between the phenol resorcinol formaldehyde adhesive and wood was broken, and the damage from freezing temperature to the wood was more obvious.
All organic xerogels, which were synthesized from condensation of resorcinol and formaldehyde with an RC ratio of 2 to 500, showed monolithic and homogeneous samples with low densities of 0.37 to 0.45 g[cm.sup.-3].
The PCAWDF prepared using HPAM, formaldehyde, and resorcinol was confirmed by strong absorption at 3438.5 [cm.sup.-1] (-NH stretching vibration), 2938.7 [cm.sup.-1] (-C[H.sub.2] stretching vibration), 1672.2 [cm.sup.-1] (C=O stretching vibration), and 1562.4 [cm.sup.-1] (C-N stretching vibration and -NH bending vibration) in the IR spectroscopy of the profile control agent.
MR is a good alternative to resorcinol. Besides MR being a byproduct of oil shale industry and therefore a locally available precursor, gels prepared from MR have also shown faster gelation times compared to gels prepared from resorcinol [3-5].
Trapido and Gubergrits studied the kinetics of oxidation and photooxidation of resorcinol and 5-methylresorcinol in distilled water and in model Baltic Sea water [9].
Thus it is essential to develop an accurate and precise method for the estimation of resorcinol from cosmetic and pharmaceutical formulations.
60 'jetty', or jet black, used to be IEATY 70 these names have now gone, more is the PITY 80 he's a retired business man now, a RETIREE 90 he to whom an allotment is made is an ALLOTTEE THE TEENS 113 a partway floor, is a MEZZANINE 114 the driver has a very dirty WINDSCREEN 115 a complex steroid is ANDROSTENE 116 a derivative of resorcinol is HEXYLAMINE 117 the pop group arrived in a LIMOUSINE 118 their drummer also played the TAMBOURINE 119 an amino sugar called GLUCOSAMINE [ILLUSTRATION OMITTED]
Catechol (1,2-dihydroxybenzene), resorcinol (1,3-dihydroxybenzene), and hydroquinone (1,4-dihydroxybenzene) are the three isomers of dihydroxybenzene, which are used in cosmetics, pesticides, scent and flavor essences, drugs, antioxidants and chemicals for photography and paint.
The usual boxed, chemical hair dyes marketed as aenatural' typically do not contain resorcinol, ammonia or peroxide.