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Thymol Blue sodium, an acid-base indicator, changes from red to yellow at pH 1.2 to 2.8 and from yellow to blue at pH 8.0 to 9.6 [1]. Storage: protect from light.

| Pack Size | Price | Availability | Quantity | 
|---|---|---|---|
| 25 mg | Inquiry | 7-10 days | |
| 50 mg | Inquiry | 7-10 days | |
| 100 mg | Inquiry | 7-10 days | 
| Description | Thymol Blue sodium, an acid-base indicator, changes from red to yellow at pH 1.2 to 2.8 and from yellow to blue at pH 8.0 to 9.6 [1]. Storage: protect from light.  | 
| Synonyms | Thymolsulphonephthalein | 
| Molecular Weight | 466.59 | 
| Formula | C27H30O5S | 
| Cas No. | 76-61-9 | 
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. | 

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