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Phenol red, ACS, 25 g

Phenol red, ACS, 25 g

Synonyms Phenolsulfonphthalein

CAS Number: 143-74-8 Molecular Formula: C19H14O5S Molecular Weight: 354.38

Beilstein Registry Number: 326470 EC Number: 205-609-7 MDL Number: MFCD00003552

Packaging size: 25 g

SKU 0215255425
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SKU 0215255425
Alternate Names Phenolsulfonphthalein
Application Notes 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.
Base Catalog Number 15255425
Beilstein Registry Number 326470
CAS # 143-74-8
EC Number 205-609-7
Extinction Coefficient 31.62 (free acid, 0.1 M phosphate buffer, pH 7.66)
Grade ACS grade
Hazard Statements H315-H319-H335
Molecular Formula C19H14O5S
Molecular Weight 354.38
Pack Size 25 g
Personal Protective Equipment Dust mask, Eyeshields, Gloves
pH Visual Transition Interval: pH 6.8 (yellow) to pH 8.2 (red)
pKa 7.9(Lit.)
Preparation Method It is made by condensing two moles of phenol with one mole of o-sulfobenzoic acid anhydride.
RTECS Number SJ7490000
Safety Symbol GHS07
Solubility Soluble in water (3 mg/mL), ethanol (4 mg/mL), methanol or acetic acid. Readily soluble in alkaline solutions.
Usage Statement Unless specified otherwise, MP Biomedical's products are for research or further manufacturing use only, not for direct human use. For more information, please contact our customer service department.
UV Visible Absorbance λ max 360 nm; λ max 557 nm (2nd)(Lit.)
Vapor Pressure Zero (Lit.)