pyrogallol

[‚pī·rō′ga‚lȯl]

(organic chemistry)

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pyrogallol

(1,2,3-trihydroxybenzene), a trihydric phenol; a colorless, odorless crystalline solid. Melting point, 133°–134°C; boiling point, 309°C. It darkens rapidly upon exposure to air, sublimes readily, and is soluble in water, alcohol, and ether.

Pyrogallol is produced commercially by dry distillation (decarboxylation) of gallic acid and tannins (derivatives of gallic

acid). The rapid and quantitative absorption of oxygen by pyro-gallol is used in analytical chemistry, including gas analysis, and in laboratory practice. Pyrogallol is also used as a photographic developer. It is a source material in the synthesis of certain dyes.

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References in periodicals archive

The wall of CNTs had strong interactions with the aromatic ring of pyrogallol, which led to the adsorption of pyrogallol.

Improvement of dispersion of carbon nanotubes in epoxy resin through pyrogallol functionalization

A ratio of 1:1 hexane: DEE extracted pyrogallol, acetosyringone and most of the syringaldehyde.

Base-catalyzed depolymerization of lignin: separation of monomers

However, if there is a possibility for [Cs.sup.+] to interact simultaneously with several hydroxyl groups (as in catechol, pyrogallol) by forming chelate-type complexes, the affinity is obviously higher and comparable to the molecules with carboxyl groups present.

Computational study of cesium cation-humic substance interactions. A neutral analogue ligand molecules approach/Humiinhapete ja tseesiumikatiooni vaheliste interaktsioonide modelleerimine tihedusfunktsionaali-teooria arvutustega neutraalsete mudeluhendite baasil

However in the case of the 1:1 adduct of 1,2,3-trihydroxybenzene (pyrogallol, VII) and HMTA (shown in Scheme 2), investigation of the crystal structure has been carried out using powder diffraction data obtained from a conventional laboratory-based diffractometer [6].

Direct space structure solution applications

Pyrogallol, an analog of propyl-gallate, has been used for an adsorptive stripping measurement of germanium (IV) (8).

Square-wave adsorptive cathodic stripping voltammetric analysis for trace zinc on a bismuth-coated glassy carbon electrode

The catechol, resorcinol, pyrogallol and phloroglucinol were of laboratory grade.

Novel approach of rubber-filler interaction through surface modification of carbon black

Pyrogallol is used in biodiesel as it acts as an anti-oxidizing agent.

Pyrogallol Market Forecast Covering Growth Inclinations & Development Strategies until 2028

Folin-Ciocalteu's phenol reagent, fluorescein sodium, 2,2,-azobis(2-amidinopropane)dihydrochloride (AAPH), 2,5-dinitrosalicylic acid (DNS), trolox, ethylenediaminetetraacetic acid (EDTA), pyrogallol, quercetin, and gallic acid were supplied by Sigma-Aldrich LLC (St.

Effect of Yeast Fermentation of Green Coffee Beans on Antioxidant Activity and Consumer Acceptability