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Chromotropic acid disodium salt dihydrate is a chemical compound with the formula C10H6Na2O8S2·2H2O. It is the hydrated sodium salt of chromotropic acid and typically appears as a water-soluble powder or crystalline solid. Here are some key details about it:
Chemical Formula: C10H6Na2O8S2·2H2O
Molecular Weight: 388.27 g/mol
Appearance: Usually a white to light beige crystalline powder.
Solubility: Highly soluble in water.
Chromotropic acid disodium salt dihydrate has a range of applications, particularly in analytical chemistry, dye production, and environmental testing. Here are its key uses:
Formaldehyde Detection:
Chromotropic acid reacts with formaldehyde in acidic conditions to produce a purple-colored complex, making it a standard reagent for the spectrophotometric determination of formaldehyde in various samples.
Ion Detection:
Used as a reagent for detecting certain metal ions and organic compounds due to its ability to form colored complexes.
Water Quality Testing:
Utilized to detect trace levels of formaldehyde and other aldehydes in water and environmental samples.
Air Quality Analysis:
Plays a role in assessing indoor air quality by measuring formaldehyde concentrations, which is important for ensuring safe environments in homes and workplaces.
Azo Dye Precursor:
Chromotropic acid is a key intermediate in the synthesis of azo dyes, which are widely used in textile, paper, and leather industries.
Staining Reagent:
Used in biological and chemical staining applications due to its intense coloration properties when reacting with specific compounds.
Coordination Chemistry:
Its structure allows it to act as a chelating agent in the study of metal-ligand interactions.
Organic Synthesis:
Acts as a building block in the synthesis of more complex organic molecules.
As a chemical reagent, it can be used in quality control processes for monitoring specific aldehyde levels in pharmaceutical products and food items.
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