| Specification |
| Product Name |
THYMOLPHTHALEIN |
| Synonyms |
5’,5”-Diisopropyl-2’,2”-dimethylphenolphthalein; 3,3-Bis[4-
hydroxy-2-methyl-5-(1-methylethyl)phenyl]-1(3H)-
isobenzofuranone |
| CAS NO. |
125-20-2 |
| Molecular Formula |
C28H30O4 |
| Formula Weight |
430.55 |
| Appearance |
White Powder |
| Structure |
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| Tests |
Limits |
| Solubility 0.1% (Ethanol) |
- Clear Solution |
| Transition Color |
- pH 9.3 – pH 10.5
Colourless - Blue
|
Absorptivity 1%, 1cm,
(in 0.1N NaOH)
at λ max.594.0 nm |
- >1000
|
| Loss on Drying (110°C) |
- <1 %
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| REVISED: 1-1-2012 |
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