A usually available or readily made compound or known mixture of compounds used to treat materials, samples, other compounds or reactants in a laboratory or sometimes an industrial setting
{n} a substance employed to precipitate another in a solution, or detect the ingredients of a mixture
Substance used in a chemical reaction to produce another substance or to detect its composition
A reagent is a substance that is used to cause a chemical reaction. Reagents are often used in order to indicate the presence of another substance. a substance that shows that another substance in a compound exists, by causing a chemical reaction (present participle of reagere , from agere )
{i} substance used to detect or measure another substance or to convert one substance into another by chemical reaction (Chemistry)
a chemical substance used to cause a reaction for the purpose of chemical analysis
an alkyl or aryl magnesium halide, used in the Grignard reaction to form substituted alcohols; they are formed from alkyl or aryl halides and metallic magnesium
An antibody, peptide, nucleic acid, or other small molecule that specifically binds to a larger target molecule in order to identify, track, capture, or influence its activity
{i} Nessler's solution, water based solution of potassium hydroxide and mercuric iodide and potassium iodide (used to test and detect for the presence of ammonia)
Note that the word is 'reagent' and not 'reactant', because these two words are different and they mean different things, OK? The word reagent is taken to mean a substance that can be taken from a shelf or from a store cupboard geddit? If students are requested to specify the name of a reagent they must give the full name of the compound, eg sodium hydroxide rather than 'hydroxide ions '
Strips or tablets that people use to test the level of glucose (sugar) in their blood and urine or the level of acetone in their urine These reagents are treated with chemicals that change color during the test Each type of reagent has its own color code to show how much glucose or acetone there is at the time of the test
Chemicals which are added to water samples to react with a specific chemical in the sample to produce a measurable effect (such as the formation of colour) which enable the determination of the concentration of a particular chemical(s) in the water- see also colourimeter
Substances used to recover the tiny particles of phosphate rock during the flotation process Phosphate reagents include fuel oil, soap skimmings and fatty acids When coated with these substances, the phosphate particles repel water and are attached to air bubbles which float them to the surface of the vessel, while the sand sinks
Reagents come in a variety of different qualities For the work that is done in environmental testing, the use of chemicals meeting American Chemical Society (A C S ) requirements is recommended