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Bromocresol purple
CAS 115-40-2; Ultrapure grade
Bromocresol purple (BCP) or 5',5-dibromo-o-cresolsulfophthalein, is a pH indicator. In its sultone form, it has a pKa value of 6.3, and is usually prepared as a 0.04% aqueous solution. Besides its primary function as an indicator, bromocresol purple is used in medical laboratories to measure albumin.
Chemical structure for Bromocresol purple *CAS 115-40-2* *Ultrapure grade*
Chemical structure for Bromocresol purple *CAS 115-40-2* *Ultrapure grade*
CatalogSize
Price
Quantity
9225 g
Price
 
Physical properties

Molecular weight540.22
SolventWater
Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageRoom temperature (10-25 °C); Minimize light exposure
UNSPSC12171501
CAS115-40-2
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Page updated on October 13, 2025