请输入您要查询的英文单词:

 

单词 pyrogallol
释义

pyrogallol


py·ro·gal·lol

P0688000 (pī′rō-găl′ôl′, -ōl′, -ŏl′, -gô′lôl′, -lōl′, -lŏl′)n. A white, toxic crystalline phenol, C6H3(OH)3, used as a photographic developer and to treat certain skin diseases. Also called pyrogallic acid.
[pyro- + gall(ic acid) + -ol.]
py′ro·gal′lic (-găl′ĭk, -gô′lĭk) adj.

pyrogallol

(ˌpaɪrəʊˈɡælɒl) n (Elements & Compounds) a white lustrous crystalline soluble phenol with weakly acidic properties; 1,2,3-trihydroxybenzene: used as a photographic developer and for absorbing oxygen. Formula: C6H3(OH)3[C20: from pyro- + gall(ic)2 +-ol1] ˌpyroˈgallic adj

py•ro•gal•lol

(ˌpaɪ rəˈgæl ɔl, -ɒl, -ˈgɔ lɔl, -lɒl)

n. a white, crystalline, water-soluble, poisonous, solid, phenolic compound, C6H3(OH), obtained by heating gallic acid and water. [1875–80; pyro- + gall(ic) + -ol1] py`ro•gal′lic (-ˈgæl ɪk, -ˈgɔ lɪk) adj.
Thesaurus
Noun1.pyrogallol - a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developerpyrogallic acidphenol - any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups

pyrogallol


pyrogallol

(pī'rōgăl`ōl) or

pyrogallic acid

(–ĭk), C6H6O3, white, crystalline, aromatic compound with a biting taste; it is poisonous. It melts at 133&degC; and boils at 309&degC;. In alkaline solution it is an active reducing agent. Pyrogallol is widely used in photographic developing and in the manufacture of some dyes. Chemically it is a phenol; its IUPAC name is 1,2,3-trihydroxybenzene.

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.

pyrogallol

[‚pī·rō′ga‚lȯl] (organic chemistry) pyrogallic acid

pyrogallol


pyrogallol

(pī′rō-găl′ôl′, -ōl′, -ŏl′, -gô′lôl′, -lōl′, -lŏl′)n. A white, toxic crystalline phenol, C6H3(OH)3, used as a photographic developer and to treat certain skin diseases. Also called pyrogallic acid.
py′ro·gal′lic (-găl′ĭk, -gô′lĭk) adj.

pyrogallol

(pī″rō-găl′ōl″) C6H6O3; a toxic chemical derived from gallic acid.
See PYRO
See PYRO

pyrogallol


Related to pyrogallol: purpurogallin
  • noun

Synonyms for pyrogallol

noun a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developer

Synonyms

  • pyrogallic acid

Related Words

  • phenol
随便看

 

英语词典包含2567994条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/2/26 7:40:01