Bromocresol Purple

Bromocresol Purple

pH Indicator Dye for Microbiology & Laboratory Use
Catalog Number: ASC-1013

Product Information

• Catalog Number: ASC-1013

• Chemical Name: Bromocresol Purple

• CAS Number: 115-40-2

• Molecular Formula: C₂₁H₁₆Br₂O₅S

• Molecular Weight: 540.24 g/mol

• Appearance: Purple crystalline powder

Overview

Bromocresol Purple is a sulfonephthalein pH indicator dye widely used in microbiological culture media and laboratory research. It exhibits a distinct purple-to-yellow color change in response to pH variation, making it suitable for monitoring acid–base reactions and metabolic activity in culture systems.

In microbiology, Bromocresol Purple is commonly incorporated into differential media to indicate carbohydrate fermentation and other biochemical reactions that result in pH shifts during microbial growth.

Typical Applications

• pH indicator in microbiological culture media

• Differential media formulation

• Analytical chemistry and buffer systems

• Laboratory research and education

Key Features

• Clear and reproducible pH-dependent color change

• Suitable for microbiological and analytical use

• Stable under recommended laboratory conditions

• Consistent batch-to-batch performance

Storage & Handling

• Store in a cool, dry place

• Keep container tightly closed

• Protect from light and moisture

Intended Use

For laboratory and research use only.
Not for human, veterinary, diagnostic, or therapeutic use.

Quality & Compliance

• Manufactured under controlled conditions

• Suitable for routine laboratory applications

• COA and SDS available upon request