76-61-9
Chemical Structure
Thymol blue
Synonym(s): Thymolsulphonephthalein
- CAS No.: 76-61-9
- Formula:C27H30O5S
- Molecular Weight:466.59
IUPAC Name: 3,3-bis(4-hydroxy-5-isopropyl-2-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide
InChIKey: PRZSXZWFJHEZBJ-UHFFFAOYSA-N
SMILES: O=S1(OC(C2=C(C)C=C(O)C(C(C)C)=C2)(C3=C(C)C=C(O)C(C(C)C)=C3)C4=CC=CC=C41)=O
Biological Activity: Thymol blue is a reversible pH indicator that responds to the pH of the solution through structural changes of protonation and deprotonation. Thymol blue is red (HI- form) under acidic conditions and blue (I2- form) under alkaline conditions. Quantitative detection is achieved through the absorption peak shift (435 nm/596 nm) of the UV-visible spectrum. Thymol blue selectively responds to pH changes, changing from red to yellow at pH 1.2-2.8 and from yellow to blue at pH 8.0-9.6. Thymol blue can be fixed in a silica gel matrix through sol-gel technology to form a solid-state sensor for in-situ pH measurement in the marine environment and acid-base monitoring in the biomedical field[1][2].
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Thymol blue | Thymol blue is a reversible pH indicator that responds to the pH of the solution through structural changes of protonation and deprotonation. Thymol blue is red (HI- form) under acidic conditions and blue (I2- form) under alkaline conditions. Quantitative detection is achieved through the absorption peak shift (435 nm/596 nm) of the UV-visible spectrum. Thymol blue selectively responds to pH changes, changing from red to yellow at pH 1.2-2.8 and from yellow to blue at pH 8.0-9.6. Thymol blue can be fixed in a silica gel matrix through sol-gel technology to form a solid-state sensor for in-situ pH measurement in the marine environment and acid-base monitoring in the biomedical field. | |||||||||||||||||||||
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