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BPB
3',3'',5',5''-Tetrabromophenolsulfonephthalein
CAS 115-39-9
Assay 99%min
Packing 25kg/drum
Bromophenol Blue
| Name | Bromophenol Blue |
| Synonyms | BPB; 3',3'',5',5''-Tetrabromophenolsulfonephthalein |
| Molecular Structure |  |
| Molecular Formula | C19H10Br4O5S |
| Molecular Weight | 669.96 |
| CAS Registry Number | 115-39-9 |
| EC Number | 204-086-2 |
Specification
Test | Specification |
Appearance | Light yellow to light red powder |
PH-Transition | 3.0(yellow) to 4.6(blue purple) |
Residue on ignition(as SO4),% | ≤ 0.25 |
Solubility in ethanol | Pass |
Quality absorption coefficient(L/cm·g） | ≥ 115.0 |
Uses:
1. Electrophoretic indicator
Monitor the electrophoresis process, determine the endpoint, and use it as a molecular weight reference.
2. pH indicator
Color changing range pH 3.0 (yellow)~4.6 (blue purple), used for acid-base titration.
3. Protein electrophoresis staining
Mark protein migration sites to assist analysis.
4. Adsorption indicator
Auxiliary color development in non-aqueous titration.
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