Bromocresol Purple Free Acid

CAS No

115-40-2

Synonym(s)

5,5′-Dibromo-o-cresolsulfonphthalein;

Bromcresol purple sultone form

Molecular Formula:

C₂₁H₁₆Br₂O₅S

Molecular Weight:

540.22

EC Number:

204-087-8

Colour Index Number:

–

PubChem CID:

8273

MDL number:

MFCD00011681

Specification SDS

Bromocresol Purple Free Acid CAS: 115-40-2 | MF: C21H16Br2O5S | MW: 540.22, Buy now for accurate and Reproducible results from Tristains indicators. All Tristains products are exclusively distributed by Dawn Scientific Inc.

Bromocresol purple is a member of the triarylmethane class of dyes. It typically appears as a solid powder with a purple color. Its chemical formula is C₂₁H₁₆Br₂O₅S. Bromocresol purple exhibits a sharp color change from yellow to purple over a narrow pH range (around pH 5.2 to 6.8). Bromocresol purple free acid is sparingly soluble in water but more soluble in organic solvents like alcohol. Bromocresol purple (BCP) free acid is a pH indicator commonly used in laboratory settings for various applications.

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Application :

Bromocresol purple free acid is used as a pH indicator in various titrations. It is also used for live/dead differentiation of yeast.
In biochemistry, BCP is often used to monitor pH changes in reaction mixtures, particularly in enzymatic assays and protein characterization studies.
It can also be used in microbiology for detecting pH changes in culture media, helping to differentiate between bacterial species based on their metabolic activities.