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BROMOPHENOL BLUE INDICATOR SOLUTION pH3.0-4.6
Bromophenol blue, Tetrabromophenolsulfonephthalein, 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 purple at pH 4.6; this reaction is reversible.
Bromophenol Blue is a pH indicator dye that turns yellow under acidic conditions.
Bromophenol Blue has a pI below pH 4.0.
The concentrated dye solution may have a reddish or greenish cast to the color.
The dyes with negative charge are bromophenol blue, orange G and xylene cyanol. ... The comb would be placed near the end of the gel since DNA has a negative charge and will migrate towards the positive electrode only
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
May be harmful if swallowed. Inhalation: May cause respiratory tract irritation.