The type, character istic, mechanism of formation reaction and application of multi-component complex using bisazo derivative of chromotropic acid as ligand are introduced.
综述了变色酸双偶氮衍生物有关多元络合物的类型、特点、形成机理及应用概况。
Chromotropic acid
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Chromotropic acid
Chromotropic acid has the formula is (HO)2C10H4(SO3H)2.
It can be used for as a reagent in the quantitative determination of the systemic herbicide, 2,4-Dichlorophenoxyacetic acid.
The usefulness of this reagent in quantitative determination is the formation of a red colouration (peaking at 580 nm wavelength) when chromotropic acid in 75% sulfuric acid reacts with formaldehyde. The colouration is specific to this aldehyde and is not produced from other organic species such as ketones and carboxylic acids.
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