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A19530 Bromocresol Purple

CAS Number
115-40-2
Synonyms

Stock No. Size Price ($) Quantity Availability
A19530-09 10g 25.20
A19530-18 50g 96.10
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Bromocresol Purple

MDL
MFCD00011681
EINECS
204-087-8

Chemical Properties

Formula
C21H16Br2O5S
Formula Weight
540.24
Melting point
ca 240° dec.
Storage & Sensitivity
Ambient temperatures.
Solubility
Insoluble in water. Soluble in ethanol (80 mg/ml), alcohol, methanol (4 mg/ml), methyl cellosolve (300 mg/ml) and dilute alkalies.

Applications

It is used as a pH indicator and to measure serum albumin concentrations. It is used as a pH indicator (5.2-6.8 : yellow to blue-purple) and also used in spectrophotometric determination of serum-albumin.

Notes

Transition interval: pH 5.2 (yellow) to pH 6.8 (purple)

Literature References

Hill PG, et al. Bromocresol purple and the measurement of albumin. Falsely high plasma albumin concentrations eliminated by increased reagent ionic strength.Ann Clin Biochem.1983,20(5), 264-70.

Ueno T.; Hirayama S.; Sugihara M.; Miida T. ANNALS EXPRESS: The bromocresol green assay, but not the modified bromocresol purple assay, overestimates the serum albumin concentration in nephrotic syndrome through reaction with α2-macroglobulin.Ann. Clin. Biochem.2015.

Other References

Merck
14,1387
Beilstein
359618
Harmonized Tariff Code
2934.99
TSCA
Yes

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