Substance added to a system to cause a chemical reaction
Not to be confused with Regent.
"Reactants" redirects here. Not to be confused with Reactance.
Reagents, such as sulfur (pictured), are the starting materials used in chemical reactions.
In chemistry, a reagent (/riˈeɪdʒənt/ree-AY-jənt) or analytical reagent is a substance or compound added to a system to cause a chemical reaction, or test if one occurs.[1] The terms reactant and reagent are often used interchangeably, but reactant specifies a substance consumed in the course of a chemical reaction.[1]Solvents, though involved in the reaction mechanism, are usually not called reactants. Similarly, catalysts are not consumed by the reaction, so they are not reactants. In biochemistry, especially in connection with enzyme-catalyzed reactions, the reactants are commonly called substrates.
^ abIUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version: (1996) "Reactant". doi:10.1351/goldbook.R05163
In chemistry, a reagent (/riˈeɪdʒənt/ ree-AY-jənt) or analytical reagent is a substance or compound added to a system to cause a chemical reaction, or...
Grignard reagents or Grignard compounds are chemical compounds with the general formula R−Mg−X, where X is a halogen and R is an organic group, normally...
Reagent bottles, also known as media bottles or graduated bottles, are containers made of glass, plastic, borosilicate or related substances, and topped...
This is a list of inorganic and organic reagents commonly used in chemistry. Reagents are "substances or compounds that are added to a system in order...
The limiting reagent (or limiting reactant or limiting agent) in a chemical reaction is a reactant that is totally consumed when the chemical reaction...
Collins reagent is the complex of chromium(VI) oxide with pyridine in dichloromethane. This metal-pyridine complex, a red solid, is used to oxidize primary...
organometallic chemistry, organolithium reagents are chemical compounds that contain carbon–lithium (C–Li) bonds. These reagents are important in organic synthesis...
(benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate) reagent is a reagent commonly used in the synthesis of peptides. Its use is discouraged...
concentration, according to the Beer–Lambert law. Despite its name, the reagent does not in fact contain biuret [(H2N−CO−)2NH]. The test is named so because...
that has also found use in the staining of biological tissues. The Schiff reagent is the reaction product of a dye formulation such as fuchsin and sodium...
red blood cells) and then incubated with anti-human globulin ("Coombs reagent"). If the red cells then agglutinate, the test is positive, a visual indication...
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