TETRABROMOPHENOLPHTHALEIN ETHYL ESTER
Synonym(s):TBPE
- CAS NO.：1176-74-5
- Empirical Formula: C22H14Br4O4
- Molecular Weight: 661.96
- MDL number: MFCD00066387
- EINECS: 214-645-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-10 10:27:15
What is TETRABROMOPHENOLPHTHALEIN ETHYL ESTER?
Chemical properties
Yellow to red powder
The Uses of TETRABROMOPHENOLPHTHALEIN ETHYL ESTER
3′,3″,5′,5″-Tetrabromophenolphthalein ethyl ester (TBPE) is an anionic dye used as a counter ion in the spectrophotometric determination of cationic surfactants. TBPE is also used in the spectrometric determination of aliphatic primary, secondary and tertiary amines.
General Description
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Purification Methods
Crystallise the ester from *benzene, dry at 120o and keep it under vacuum. [Beilstein 10 III 4490.]
Properties of TETRABROMOPHENOLPHTHALEIN ETHYL ESTER
| Melting point: | 208-211 °C |
| Boiling point: | 619.9±55.0 °C(Predicted) |
| Density | 1.9236 (rough estimate) |
| refractive index | 1.5000 (estimate) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| form | Powder |
| pka | 6.25±0.40(Predicted) |
| color | Yellow to red |
| BRN | 2228548 |
| EPA Substance Registry System | Benzoic acid, 2-[(3,5-dibromo-4-hydroxyphenyl)(3,5-dibromo-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-, ethyl ester (1176-74-5) |
Safety information for TETRABROMOPHENOLPHTHALEIN ETHYL ESTER
Computed Descriptors for TETRABROMOPHENOLPHTHALEIN ETHYL ESTER
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