Bromocresol Purple CAS 115-40-2 BCP

Name	Bromocresol Purple
Synonyms	5',5''-Dibromo-o-cresolsulfonephthalein; BCP
Molecular Structure
Molecular Formula	C21H16Br2O5S
Molecular Weight	540.22
CAS Registry Number	115-40-2
EC Number	204-087-8

Uses：

1. Acid base indicator

PH color range: 5.2 (yellow) to 6.8 (purple), suitable for acid-base titration and pH monitoring.

Chromatographic analysis, non-aqueous titration, and serum protein spectrophotometric determination.

2. Microbial cultivation

Culture medium indicator: Determine microbial metabolism and acid production through color changes.

Disinfection effect monitoring: cultivation of biological indicators for pressure steam disinfection process.

3. Clinical and biochemical testing

Qualitative analysis of urinary albumin: as an indicator for detecting albumin in urine.

Thiocyanate titration: an adsorption indicator used in silver salt titration of thiocyanate.

4. Other uses

Amino acid chromatographic analysis: used as an internal standard.