Product Overview
Bromophenol Blue, Sodium Salt, Reagent, ACS
Molecular Formula:C19H9Br4O5S•Na
CAS Number:34725-61-6 or 62625-28-9
Molecular Weight:691.94
Bromophenol blue sodium salt is a tracking dye for protein or nucleic acid electrophoresis in polyacrylamide or agarose gels.
Alternate Names:3′,3′′,5′,5′′-Tetrabromophenolsulfophthalein sodium salt
| TEST | SPECIFICATION | RESULTS |
|---|---|---|
| Appearance | Yellow brown to orange to green powder | Orange brown powder |
| Visual Transition Interval | From pH 3.0 (yellow) to pH 4.6 (blue) | Complies |
| Solution (Clarity) | Complies | |
| Extinction Coefficient (1) | 320 - 370 (1% /1 cm, pH 3.0 at λmax 438 nm) | 335 |
| Extinction Coefficient (2) | 880 - 950 (1% /1 cm, pH 4.6 at λmax 591 nm) | 924 |
| Loss on Drying | < 5.0% (110 °C, 1 hour) | 3.10% |
