Product Name: Bromophenol Blue
Synonym: BPB; 3′,3”,5′,5”-Tetrabromophenolsulfonephthalein; 4,4′-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2,6-dibromo-phenol];Bromophenol blue (BPB), AR;
Molecular Structure:
Specifications:
| Item | Specifications |
| CAS No. | 115-39-9 |
| Molecular Formula | C19H10Br4O5S |
| Molecular Weight | 669.96 |
| Appearance | Light red crystal or light yellow to light brown powder |
| Assay, % | 3.0 (yellow) — 4.6 (blue and purple) |
| PH color range | 5.6~6.1 |
| Mass Absorption Coefficient, L/cm·g | ≥115.0 |
| Alcohol Dissolution Test | Qualified |
| Burning Residue (Calculated By Sulfate) | ≤0.25 |
Packing: 1KG/Bag; 25KG/Drum
Function:
Bromophenol Blue is a light red crystal or light yellow to light brown powder. The melting point is 279°C (decomposition). Soluble in alcohol, dilute lye and ammonia solution, it turns blue, slightly soluble in water and ether solution with yellow color, its sodium salt dissolves in water and turns blue.
Application:
Acid-base indicator, pH3.0 (yellow)-4.6 (purple). Non-aqueous solution titration indicator, protein electrophoresis staining, virus assay, etc.
Storage:
This product should be stored in a cool, dry, clean, and shading environment, and it is strictly forbidden to mix with toxic and harmful substances to avoid contamination.
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