Chlorophenol red

Properties and uses

The dissociation mechanism of chlorophenol red is similar to that of phenolphthalein meaning it can be used as a color indicator. The dissociation of hydroxyl and hydrogen atoms creates the dissociate scheme of chlorophenol red to change color from yellow to red. The pH properties of chlorophenol red are used to selectively determine the amount of chlorine dioxide in drinking water. Chlorophenol red selectively reacts with 0.1–1.9 mg/L chlorine dioxide at pH 7. The electrochemical properties of Chlorophenol red allows it to be a chromogenic label and can undergo oxidation creating several phenolic intermediates. The bacterial hydrolysis of a chlorophenol red labelled substrate produces chlorine retaining intermediates on electrodes.

References

Cited sources

References

1. Haynes, p. 3.116
2. Haynes, p. 8.88
3. (2013-10-02). "pH Indicators".
4. "Chlorophenol Red".
5. Hanai, Toshihiko. (2016). "Quantitative Evaluation of Dissociation Mechanisms in Phenolphthalein and the Related Compounds.". Journal of Computer Chemistry.
6. (1996-01-01). "The use of chlorophenol red for the selective determination of chlorine dioxide in drinking water". Talanta.
7. (2019-12-01). "Electroanalytical properties of chlorophenol red at disposable carbon electrodes: Implications for ''Escherichia coli'' detection". Bioelectrochemistry.