Date published: 2026-3-19

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Chlorophenol Red (CAS 4430-20-0)

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Alternate Names:
3′,3′-Dichlorophenolsulfonaphthalein
Application:
Chlorophenol Red is used to detect chlorine dioxide in drinking water
CAS Number:
4430-20-0
Molecular Weight:
423.27
Molecular Formula:
C19H12Cl2O5S
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Chlorophenol red is a pH indicator that can also detect chlorine dioxide in drinking water. Transition Interval: From pH 4.8 (yellow) to pH 6.7 (violet).


Chlorophenol Red (CAS 4430-20-0) References

  1. The use of chlorophenol red for the selective determination of chlorine dioxide in drinking water.  |  Sweetin, DL., et al. 1996. Talanta. 43: 103-8. PMID: 18966469
  2. Adequacy of Petrifilm™ Aerobic Count plates supplemented with de Man, Rogosa & Sharpe broth and chlorophenol red for enumeration of lactic acid bacteria in salami.  |  de Castilho, NP., et al. 2015. Meat Sci. 110: 253-61. PMID: 26291606
  3. Electroanalytical properties of chlorophenol red at disposable carbon electrodes: Implications for Escherichia coli detection.  |  Casimero, C., et al. 2019. Bioelectrochemistry. 130: 107321. PMID: 31306878
  4. A Simple but Effective Combination of pH Indicators for Plant Tissue Culture.  |  Funnekotter, B., et al. 2023. Plants (Basel). 12: PMID: 36840088
  5. Phosphorylated Cotton Cellulose as a Matrix for Generating Chlorine Dioxide.  |  Kazberova, A., et al. 2023. Polymers (Basel). 15: PMID: 36850250
  6. Evaluation of Low-Toxic Hybrid Sol-Gel Coatings with Organic pH-Sensitive Inhibitors for Corrosion Protection of AA2024 Aluminium Alloy.  |  Jaldo Serrano, E., et al. 2023. Gels. 9: PMID: 37102905
  7. Development of a microbial time-temperature indicator for real-time monitoring the quality of Australian vacuum-packed lamb.  |  Liu, C., et al. 2024. Int J Food Microbiol. 412: 110559. PMID: 38217949
  8. Development of an Innovative Optoelectronic Nose for Detecting Adulteration in Quince Seed Oil.  |  Mehdizadeh, SA., et al. 2023. Foods. 12: PMID: 38231827
  9. An Anthocyanin-Based Eco-Friendly Triboelectric Nanogenerator for pH Monitoring and Energy Harvesting.  |  Sun, W., et al. 2024. Molecules. 29: PMID: 38731417
  10. Exploring albumin-sulfonephthalein dyes interactions by a chemometric-assisted and multi-technique equilibria analysis in solution.  |  Magnaghi, LR., et al. 2024. Spectrochim Acta A Mol Biomol Spectrosc. 317: 124421. PMID: 38759394

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Chlorophenol Red, 10 g

sc-206022
10 g
$112.00