Bromocresol purple 0.04 wt. % in H₂O, Sigma-Aldrich®

Supplier: SIGMA-ALDRICH MICROSCOPY
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Synonyms: 3,3-Bis(3-bromo-4-hydroxy-5-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide5',5''-Dibromo-o-cresolsulphonphthalein

M-Clarity™ quality level = MQ200

318736-500MLEA 76.8 GBP
318736-500ML NOVS318736-100ML 318736-100ML
Bromocresol purple 0.04 wt. % in H₂O, Sigma-Aldrich®
Bromocresol purple

Bromocresol purple (BCP) is an organic dye and a pH indicator. It changes from yellow (pH 5.2) to purple (6.8). BCP reacts with ammonia to yield ammonium salt. Hence, it can be used as an ammonia sensing probe.

Formula: C₂₁H₁₆Br₂O₅S
MW: 540.23 g/mol
Density: 0.991 g/ml at 25 °C
Storage Temperature: Room Temperature
MDL Number: MFCD00011681
CAS Number: 115-40-2
EINECS: 204-087-8
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Specification Test Results

Appearance (Form) Liquid
Wavelength 584 - 590 nm
In 0.01 N NaOH
Extinction Coefficient ≥60000
Visual Interval Pass
pH 5.2 = Yellow to Green-Yellow
Visual Interval Pass
pH 6.8 = Purple

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