How to prepare 4-Nitrophenol solution for pH indicating?

Jun 29，2026

Add 0.2 g 4-Nitrophenol in 100 mL Ethanol or 0.08 g in 100 mL water. Below pH 5.4, it is colorless; pH 5.4 to 7.5, it turns yellow.

Determination methods of 4-nitrophenol Jun 13, 2026
4-Nitrophenol is an organic pollutant yet has extensive applications. Its detection and removal have become key research focuses.

4-Nitrophenol

100-02-7

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