Indophenol

Indophenol

Chemical structure of Indophenol

Indophenol is a synthetic dye that is commonly used as a redox indicator in various chemical reactions. It is known for its distinctive blue color in its oxidized form and is often used in titrations and other analytical chemistry applications.

Chemical Properties

Indophenol is an organic compound with the chemical formula C₁₂H₉NO₂. It is a member of the phenol family and contains both phenolic and amine functional groups. The compound is characterized by its ability to undergo reversible oxidation and reduction, which is the basis for its use as a redox indicator.

Uses

Indophenol is primarily used in analytical chemistry as a redox indicator. It is particularly useful in titrations involving ascorbic acid (vitamin C), where it changes color from blue to colorless as it is reduced. This property makes it an effective tool for determining the concentration of ascorbic acid in various samples.

Synthesis

Indophenol can be synthesized through the reaction of phenol with nitrosobenzene in the presence of a base. This reaction results in the formation of the indophenol compound, which can then be isolated and purified for use in various applications.

Related Compounds

Indophenol is related to other phenolic compounds and dyes, such as phenolphthalein and methylene blue. These compounds share similar properties and are often used in similar applications, particularly in the field of analytical chemistry.

Related Pages

• Redox indicator
• Phenol
• Ascorbic acid
• Analytical chemistry