Bromophenol blue
Bromophenol blue
IUPAC name
2,6-dibromo-4-phenol
Identifiers
CAS number
PubChem
8272
SMILES
C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C(=C3)Br)O)Br)C4=CC(=C(C(=C4)Br)O)Br
Properties
Molecular formula
C19H10Br4O5S
Molar mass
669.9607
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references
Bromophenol blue (pH indicator)
below pH 3.0
above pH 4.6
3.0
↔
4.6
Bromophenol blue (3′,3″,5′,5″-tetrabromophenolsulfonphthalein) is an acid-base indicator whose useful range as an indicator lies between pH 3.0 and 4.6. It changes from yellow at pH 3.0 to [...]