Bromocresol Green (Cas 62625-32-5) User Guide
Table of Contents
Product Overview & Specifications
Bromocresol Green (Cas 62625-32-5) is a pH-sensitive triphenylmethane dye widely used in biochemical and analytical chemistry. Key parameters:
| Parameter | Bromocresol Green | Bromocresol Purple (Comparison) |
|---|---|---|
| CAS Number | 62625-32-5 | 115-40-2 |
| Molecular Formula | C21H14Br4O5S | C21H16Br2O5S |
| Molecular Weight | 698.01 g/mol | 540.22 g/mol |
| pH Range | 3.8 (yellow) – 5.4 (blue) | 5.2 (yellow) – 6.8 (purple) |
| Solubility | Soluble in ethanol, alkali; insoluble in water | Soluble in ethanol, dilute alkali |
Applications & Use Cases
Primary Uses
- Laboratory Analysis: pH indicator in titrations (e.g., weak acid/base detection).
- Biochemical Assays: Protein concentration measurement via Bradford assay.
- Environmental Testing: Detection of carbonate/bicarbonate in water quality analysis.
Step-by-Step Usage Examples
Example 1: Acid-Base Titration
- Prepare 0.1% w/v solution in 20% ethanol.
- Add 2-3 drops to analyte solution.
- Observe color transition from yellow (pH <3.8) to blue (pH >5.4).
Client Case Studies
Case 1: University of Cambridge (UK)
- Application: Monitoring algal photosynthesis efficiency in environmental research.
- Result: Achieved 95% accuracy in pH-dependent metabolic rate measurements.
Case 2: Novartis AG (Switzerland)
- Application: Quality control in antacid tablet production.
- Result: Reduced batch rejection rate by 22% through precise endpoint detection.
Inquiry & Contact
For pricing, bulk orders, or technical support:
- Email: info@vivalr.com
- Tel: (86) 15866781826



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