Phenol red, powder ACS

Supplier: MP Biomedicals
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Synonyms: 3,3-Bis(4-hydroxyphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide

ICNA0215255405EA 34.6 GBP
ICNA0215255405 ICNA0215255425
Phenol red, powder ACS
Phenol red

Phenol Red Sodium Salt is used as a pH indicator, it is used widely in culture media to identify changes from neutral to acidic pH values.


Phenol red in tissue culture media can act as a weak estrogen, especially with human breast cancer cells. Phenol red can be used to measure hydrogen peroxide in supernatants from cultured macrophages in multiwell plates.


It is made by condensing two moles of phenol with one mole of o-sulfobenzoic acid anhydride.


Soluble in water (3 mg/ml), ethanol (4 mg/ml), methanol or acetic acid. Readily soluble in alkaline solutions.

Formula: C₁₉H₁₄O₅S
MW: 354.38 g/mol
Storage Temperature: Ambient
MDL Number: MFCD00003552
CAS Number: 143-74-8
EINECS: 205-609-7

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Specification Test Results

Identity test Passes
pH Transition Intervals: Yellow 6.8 Orange 7.0 Red 8.2
Clarity of solution Passes

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