What is a limitation of Bromothymol Blue?

Answer 1

Bromothymol Blue is a liquid indicator that can detect presence CO2 in water. It changes color from blue to green, as it detects the presence of the CO2 . In very acidic conditions it will turn yellow. It has also been used as an indicator in the NCO (isocyanate) test (where di-n-butylamine is the base and 1N HCl solution is the acid. Green is the endpoint in this titration and yellow is "over-shot". The amine value test in resin chemistry/synthesis also may use this indicator. HCl directly titrates an amine containing resin.

Answer 2

The Bromothymol Blue is a very useful acid-base indicator. However, it cannot be used to know the exact pH of a solution.

This indicator is a true yellow under 6.0 pH and is blue over 7.6 pH. Because of this, if you have a solution pH=1 and a solution of pH =5 will show the same color, yellow, even though the first solution is 10000 times more acidic.( the pH scale is a logarithmic scale)

Also, this indicator can be used to check if a solution is neutral since it has a greenish color when close to pH=7. However, there is an uncertainty in that value, so you can't know if it is truly neutral.

Answer 3

One limitation of Bromothymol Blue is that its color change is affected by pH changes within a narrow range, making it less precise for detecting small pH changes. Additionally, it may not be suitable for use in environments with extreme pH levels due to its limited pH range.

Answer 4

Bromothymol blue is used as pH indicator: under pH=6 is yellow and above pH=7,6 is blue.

For other applications see the link below.

Answer 5

this is an indicator.

Answer 6

Bromothymol blue will change at ~pH7.

Answer 7

blue pee