Indicator solution pH 5.0 - pH 8.0 (bromothymol blue)
The indicator solution with bromothymol blue and methyl red is widely used in analytics and teaching, especially in acid-base titration. The pH range from 5.0 to 8.0 allows precise measurements in this important physiological and chemical range.
The solution is characterized by its particular suitability for visualizing pH changes. Bromothymol blue and methyl red respond to changes in pH and produce a color change, allowing direct and easy pH determination.
The chemical properties are based on the ability of bromothymol blue and methyl red to act as weak acids and bases. They change color as they donate or absorb protons, depending on the pH of the solution.
The operation of the indicator solution relies on the color change of the indicators. In acidic environments, methyl red shows a red coloration, while bromothymol blue appears yellow. At alkaline pH, the indicators change color to yellow and blue, respectively. This allows the pH value of a solution to be determined quickly and easily.
The solution is characterized by its particular suitability for visualizing pH changes. Bromothymol blue and methyl red respond to changes in pH and produce a color change, allowing direct and easy pH determination.
The chemical properties are based on the ability of bromothymol blue and methyl red to act as weak acids and bases. They change color as they donate or absorb protons, depending on the pH of the solution.
The operation of the indicator solution relies on the color change of the indicators. In acidic environments, methyl red shows a red coloration, while bromothymol blue appears yellow. At alkaline pH, the indicators change color to yellow and blue, respectively. This allows the pH value of a solution to be determined quickly and easily.
Article no.: 13652
pH detection by color change (indicator solution)
Important Information
UN-Nummer: 1170
Warning labels:
Lagerung: 15 … 25 °C
Haltbarkeit: 12 Monate
product information
Relevant Ingredients:
• Ethyl alcohol
• Methyl red (C.I.: 13020)
• Bromothymol Blue sodium salt
Hazard and safety instructions
Signal Word 1: Gefahr |
Signal Word 2: flamme, exclam, , |
Warning labels: ![]() ![]() |