• Bromophenol Blue pH Indicator, 4 oz.
  • Bromophenol Blue pH Indicator, 125mL (4 oz.)
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Concentration: 0.4% in water.
Formula: C19H10Br4O5S
CAS: 115-39-9
U.S. DOT: Not Regulated.
Get the SDS: Download
Return Policy: See Below.
Discount: Buy at least 12, save 15%
Cat No. - NC-9966
Price: $14.95


This 125 mL (four ounce) bottle of bromophenol blue (also known as bromphenol blue) is a 0.4% solution in water. Used as a pH indicator, it changes color over a pH range from 3.0 (yellow) to 4.6 (blue).

Uses of bromophenol blue indicator include testing for soap in unwashed biodiesel and glycerol.

Comes packed in HDPE squeeze bottle with PP flip top cap for dispensing by the drop.


For chemical quality assurance our chemicals are "factory fresh" from qualified industrial chemical suppliers. To ensure top quality we CANNOT ACCEPT RETURNS on chemical purchases, even if the container is unopened.


Hazardous chemicals are limited to the 48 contiguous U.S. states. Ground-only (No-Fly) chemicals are limited to the 48 contiguous U.S. states and Canada.