Phenol Red Indicator Solution
Phenol Red Indicator Solution is used as a pH indicator. The sodium salt of phenol red is used widely in culture media to identify changes from neutral to acidic pH values.
It is typically used in cell culture media at 11 mg/L. A solution of phenol red will have a yellow color at a pH of 6.4 or below and a red color at a pH of 8.2 and above.Phenol red in tissue culture media can act as a weak estrogen, especially with human breast cancer cells. Lipophilic impurities, not the phenol red dye itself, account for the estrogenic activity. 95-99% of these impurities can be removed from the sodium salt of phenol red with a reduction in estrogen-like activity.
|
Physical State |
: Liquid |
|
Color |
: Red to orange |
|
Odor |
: Odorless |
|
pH |
: 7-8 |
|
Specific Gravity |
: 1.0 |
|
Solubility in water |
: Soluble |
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