| Specification |
| Product Name |
THYMOL BLUE |
| Synonyms |
TB; Thymolsulfonephthalein |
| CAS NO. |
76-61-9 |
| Molecular Formula |
C27H30O5S |
| Formula Weight |
466.60 |
| Appearance |
Dark-Green to brown to red-brown to purple crystalline powder |
| Structure |
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| Tests |
Limits |
| Solubility 0.1% (EtOH) |
- Clear Solution |
| Transition Range |
- pH 1.2 – 2.8 (Red - Greenish Yellow)
- pH 7.8 – 9.5 (Greenish Yellow – Blue) |
Absorptivity 1%/1cm,
(pH 7.8) at λ max.434.0nm
(pH 9.5) at λ max.596.0nm |
- >200
- >450 |
| Loss on Drying at 110°C (1hr) |
- >3% |
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| REVISED: 1-1-2012 |
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