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 ?
Separately focusing on the impact of HaCaT keratinocytes on the modulation of EC[DELTA]10 and EC[DELTA]50 values for haptens or prohaptens revealed that the chemicals for which potency was decreased were mainly haptens, while the majority of the chemicals for which potency was increased are prohaptens (acetaminophen, 3-aminophenol, 2-methoxy-4-methylphenol, resorcinol, cinnamic alcohol) (Fig.
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.
Carbon aerogels were prepared in which instead of resorcinol the researchers used the potassium salt of 2,4-dihydroxybenzoic acid (dHBA) in the sol-gel process, producing K+-doped hydrogels.
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.
Two types of adhesives were prepared, one is Resorcinol Adhesive, and the other is Polyurethane Adhesive.
Hazardous substances found in the wastes, soils, groundwater and surface water include volatile and semi-volatile organic compounds, metals, sulfonic acids and resorcinol, a component of adhesive systems.
The 22 endocrine-disrupting substances ChemSec added to the SIN list are: 3-benzylidene camphor, 4-meth-ylbenzylidene camphor, 4-nitrophenol, p-nitrophenol, benzophenone-l, benzophenone-2, benzophenone-3, butyl-paraben, dicyclohexyl phthalate, diethyl phthalate, dihexyl phthalate, ethylhexyl methoxycinnamate, metam natrium, methyl tertiary butyl ether (MTBE), pentachlorophenol, perchloroethylene, propylparaben, quadrosilan, resorcinol, tert-butylhydroxyanisole (BHA), thiram, and zineb.
It warned the gene mutation potential of ingredient N,N'-bis-(2-hydroxyethyl)-2-nitro-p-phenylenediamine cannot be identified without further testing; and there is "sensitising potential" for ingredient resorcinol and "moderate skin sensitising potential" for using 4-chlororesorcinol as a dye at maximum on-head concentration of 2.
IF you want to colour your hair but are worried about applying harsh chemicals to your scalp, Herb UK's Tints of Nature products are based on natural plant extracts and are ammonia and resorcinol free.
Le Bras and Piccini (24) and Picini (25) reported significant reinforcing action of resorcinol-formaldehyde (RF) resins formed in situ (by the condensation of resorcinol and formaldehyde in alkaline medium) by the addition to NR latex.