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reagent

 
Dictionary: re·a·gent   (rē-ā'jənt) pronunciation
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n.

A substance used in a chemical reaction to detect, measure, examine, or produce other substances.


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Chemistry Dictionary: reagent
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A substance reacting with another substance. Laboratory reagents are compounds, such as sulphuric acid, hydrochloric acid, sodium hydroxide, etc., used in chemical analysis or experiments.


Dental Dictionary: reagent
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n

A chemical substance known to react in a specific way.

Veterinary Dictionary: reagent
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A substance used to produce a chemical reaction so as to detect, measure, produce, etc., other substances.

Wikipedia: Reagent
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Sulfur is a reagent in many reactions

A reagent or reactant is a substance or compound consumed during a chemical reaction.[1] Solvents and catalysts, although they are involved in the reaction, are usually not referred to as reactants.

Although the terms reactant and reagent are often used interchangeably, a reagent is more specifically "a test substance that is added to a system in order to bring about a reaction or to see whether a reaction occurs". [1] Such a reaction is used to confirm the presence of another substance. Examples of such analytical reagents include Fehling's reagent and Tollens' reagent. In organic chemistry, reagents are compounds or mixtures, usually composed of inorganic or small organic molecules, that are used to affect a transformation on an organic substrate. Examples of organic reagents include the Collins reagent, Fenton's reagent, and Grignard reagent.

In another use of the term, when purchasing or preparing chemicals, "reagent-grade" describes chemical substances of sufficient purity for use in chemical analysis, chemical reactions or physical testing. Purity standards for reagents are set by organizations such as ASTM International. For instance, reagent-quality water must have very low levels of impurities like sodium and chloride ions, silica, and bacteria, as well as a very high electrical resistivity.

See also

Search Wiktionary Look up reagent or reactant in Wiktionary, the free dictionary.

References

  1. ^ a b International Union of Pure and Applied Chemistry (1996). "Reactant". Compendium of Chemical Terminology Internet edition.

This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)

Translations: Reagent
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Dansk (Danish)
n. - [kem.] reagent, reagensmiddel, reaktionskraft

Nederlands (Dutch)
reagens

Français (French)
n. - (Chim) réactif

Deutsch (German)
n. - (Chem.) Reagenz

Ελληνική (Greek)
n. - (χημ.) αντιδραστήριο

Italiano (Italian)
reagente

Português (Portuguese)
n. - reagente (m) (Quím.)

Русский (Russian)
реактив, реагент

Español (Spanish)
n. - reactivo

Svenska (Swedish)
n. - (kem) reagens

中文（简体）(Chinese (Simplified))
反应力, 试剂, 反应物

中文（繁體）(Chinese (Traditional))
n. - 反應力, 試劑, 反應物

한국어 (Korean)
n. - 시약, 반응자

日本語 (Japanese)
n. - 試薬, 反応物, 被験者

العربيه (Arabic)
‏(الاسم) الكاشف‏

עברית (Hebrew)
n. - ‮חומר מגיב (בכימייה)‬

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Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Chemistry Dictionary. A Dictionary of Chemistry. Sixth Edition. Copyright © Market House Books Ltd, 2008. All rights reserved.  Read more
Dental Dictionary. Mosby's Dental Dictionary. Copyright © 2004 by Elsevier, Inc. All rights reserved.  Read more
Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Reagent".  Read more
Translations. Copyright © 2007, WizCom Technologies Ltd. All rights reserved.  Read more