Thymolphthalein

Thymolphthalein is a chemical compound used as a pH indicator, a substance that changes color in response to a chemical change. It is a white, crystalline powder that is odorless and has a slightly bitter taste. Thymolphthalein is used in various laboratory and industrial applications.

Chemical Properties

Thymolphthalein is a phenolphthalein derivative. It has the chemical formula C28H30O4 and a molecular weight of 430.54 g/mol. It is soluble in alcohol and ether, but insoluble in water. Thymolphthalein changes color from colorless to blue at pH 9.3-10.5, making it useful as a pH indicator in titration experiments.

Uses

Thymolphthalein is primarily used as a pH indicator in various laboratory and industrial applications. It is also used in the manufacture of dyes and pigments, and as a reagent in the detection of certain metal ions.

Safety

Thymolphthalein is not considered highly toxic, but it can cause irritation if it comes into contact with the skin or eyes. It can also cause gastrointestinal discomfort if ingested. Proper safety equipment and procedures should be followed when handling this chemical.

See Also

• Phenolphthalein
• pH indicator
• Titration

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