Phenol red (also known as phenolsulfonephthalein or PSP) is a pH indicator.Its color exhibits a gradual transition from yellow to red over the pH range 6.8 to 8.2. Above pH 8.2, phenol red turns a bright pink (fuchsia) color. 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.
In microbiology it is used as a component of Phenol Red Dextrose Broth, used for the detection of fermentation by a variety of microorganisms.
In cosmetics it is reported to be used as a component of hair relaxer formulations.
Cosmetic Raw Materials
Dyes, Stains & Indicators
|Purity||Lambda max 557nm|
|Appearance||Bright red to dark red powder|
|Storage Conditions||Room temperature|
|MDL Number||Request if not shown|
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