Properties of Several Indicators
	Name	HIn Color	In- Color	pH Range
A	Thymol blue*	red	yellow	1.2 - 2.8
B	Methyl orange	red	yellow	3.1 - 4.4
C	Methyl red	red	yellow	4.2 - 6.3
D	Bromthymol blue	yellow	blue	6.2 - 7.6
E	Phenol red	yellow	red	6.8 - 8.2
F	Thymol blue*	yellow	blue	8.0 - 9.6
* Thymol blue is a diprotic weak acid and has two color changes.