845-10-3
Chemical Structure
Methyl red sodium
- CAS No.: 845-10-3
- Formula:C15H14N3NaO2
- Molecular Weight:291.29
IUPAC Name: sodium (E)-2-((4-(dimethylamino)phenyl)diazenyl)benzoate
InChIKey: GNTPCYMJCJNRQB-CMBBICFISA-M
SMILES: O=C(O[Na])C1=CC=CC=C1/N=N/C2=CC=C(N(C)C)C=C2
Biological Activity: Methyl red sodium is a pH-sensitive acid-base indicator and colorimetric reagent with a pKa of 5.1. Methyl red sodium achieves visual judgment of the titration endpoint through reversible structural changes of protonation (red, pH < 4.4) and deprotonation (yellow, pH > 6.2). Methyl red sodium is widely used in acid-base titration in chemical analysis and buffer pH monitoring in biochemistry[1][2].
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Methyl red sodium | Methyl red sodium is a pH-sensitive acid-base indicator and colorimetric reagent with a pKa of 5.1. Methyl red sodium achieves visual judgment of the titration endpoint through reversible structural changes of protonation (red, pH < 4.4) and deprotonation (yellow, pH > 6.2). Methyl red sodium is widely used in acid-base titration in chemical analysis and buffer pH monitoring in biochemistry. | |||||||||||||||||||||
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- [1]. Ikram M, et al. Biodegradation of Azo Dye Methyl Red by Pseudomonas aeruginosa: Optimization of Process Conditions. Int J Environ Res Public Health. 2022 Aug 12;19(16):9962. [Content Brief]
- [2]. Kasai, et al. Menthol induces surgical anesthesia and rapid movement in fishes. Open Neuroscience Journal 8 (2014): 1-8.
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