Bromocresol purple, powder
Supplier: MP Biomedicals
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Warning
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Synonyms:
5',5''-Dibromo-o-cresolsulphonphthalein, 3,3-Bis(3-bromo-4-hydroxy-5-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide
Bromocresol Purple is used as a pH indicator (5.2-6.8 : yellow to blue-purple). Used in spectrophotometric determination of serum-albumin.
Bromocresol purple binds quantitatively with human serum albumin forming a stable complex with absorbance maximum at 600 nm. The intensity of the color produced is directly proportional to the albumin concentration in the sample.
Soluble in water (20 mg/ml), ethanol (80 mg/ml) or methyl cellosolve (300 mg/ml). Soluble in methanol (4 mg/ml).
Formula:
C₂₁H₁₆Br₂O₅S MW: 540,23 g/mol Melting Pt: 240 °C (dec., lit.) Storage Temperature: Ambient |
MDL Number:
MFCD00011681 CAS Number: 115-40-2 |
Specification Test Results
Identity Test | Passes |
UV/Vis: l max (MeOH) | 418 ± 3 nm |
pH Color Interval | Passes |
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