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Bromophenol Blue sodium salt

3′,3′′,5′,5′′-Tetrabromophenolsulfophthalein sodium salt
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
EC Number:
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Quality Level


electrophoresis: suitable

storage temp.

room temp

SMILES string




InChI key


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General description

Bromophenol Blue is a pH indicator, and a dye appearing as a strong blue color. It is often used as a tracking dye during agarose or polyacrylamide gel electrophoresis. Bromophenol blue has a slight negative charge and will migrate the same direction as DNA, allowing the user to monitor the progress of molecules moving through the gel. The rate of migration varies with gel composition.


Bromophenol blue sodium salt has been used in the preparation of protein samples for western blotting analysis. It has also been used in Drosphila fly food to aid visualization of gut for dissection.
A tracking dye for nucleic acid or protein electrophoresis in agarose or polyacrylamide gels.


5, 10, 25 g in glass bottle


A 6x Gel Loading Buffer can be made using standard recipes, including 0.015% bromophenol blue.

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

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