Lexic.us

Definition of Hydroquinone

1. n. A white crystalline substance, C₆H₄(OH)₂, obtained by the reduction of quinone. It is a diacid phenol, resembling, and metameric with, pyrocatechin and resorcin. Called also dihydroxy benzene.

Definition of Hydroquinone

1. Noun. (organic compound) The diphenol para-dihydroxy benzene, used as a mild reducing agent in photographic developing; isomeric with catechol and resorcinol. ¹

¹ Source: wiktionary.com

Definition of Hydroquinone

1. [n -S]

Medical Definition of Hydroquinone

1. A white crystalline substance, C6H4(OH)2, obtained by the reduction of quinone. It is a diacid phenol, resembling, and metameric with, pyrocatechin and resorcin. Synonym: dihydroxy benzene. Origin: Hydro-, 2 + quinone. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Hydroquinone

Literary usage of Hydroquinone

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Dictionary of Chemistry and the Allied Branches of Other Sciences by Henry Watts (1871)
"hydroquinone, suddenly heated above the boiling point, is partially decomposed into quinone and green hydroquinone. When passed in the state of vapour ..."

2. The Practical Methods of Organic Chemistry by Ludwig Gattermann, William Bush Schober (1919)
"On reduction they take up two hydrogen atoms and pass over to hydroquinones. (See the next preparation) eg : hydroquinone Of late years ..."

3. Elements of Chemistry: Theoretical and Practical by William Allen Miller (1862)
"... converted into a green compound, but it ultimately a colourless body, termed hydroquinone. This sub- , mixed with benzoic acid, is the principal product ..."

4. Technical Methods of Chemical Analysis by Georg Lunge (1914)
"OH(i) \OH(4) hydroquinone forms colourless and odourless six-sided prisms which melt at 169°, and at a higher temperature sublime undecomposed. ..."

5. A Treatise on Chemistry by Henry Enfield Roscoe, Carl Schorlemmer (1887)
"Wohler,1 however, gave it the name of hydroquinone, because it is readily formed by the combination of hydrogen and quinone, ..."

6. An Introduction to the Chemistry of Plant Products by Paul Haas, Thomas George Hill (1917)
"hydroquinone. This third isomer of the formula C,iH4(OH), ... hydroquinone crystallizes from water in colourless prisms and melts at 169-170°. Reactions. 1. ..."

7. The Encyclopædic Dictionary of Photography: Containing Over 2,000 References by Walter E. Woodbury (1896)
"A good formula for a hydroquinone developer for dry plates is the following :— Sodium carbonate 2 grains hydroquinone i grain Sodium sulphite 2 grains ..."

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