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High Purity Cresol Red CAS 1733126 China Suppliers and Factory
Cresol Red is a high-precision sulfonylurea pH indicator specifically engineered for sensitive biochemical and laboratory applications. As a vital tool in analytical chemistry, it provides a clear, visual transition between red and yellow, allowing researchers to monitor subtle shifts in acidity and alkalinity within biologically relevant ranges (pH 7.2–8.8).
Optimized for versatility, this high-purity reagent is widely utilized in cell culture media, electrophoresis buffers, and microbiological assays. Its ability to track metabolic activity, such as acid production in microbial growth media, makes it an indispensable asset for pharmaceutical intermediates and specialized chemical research.
Detailed Parameters
| Chemical Name | Cresol Red (o-Cresolsulfonphthalein) | CAS No. | 1733-12-6 |
|---|---|---|---|
| Molecular Formula | C21H18O5S | Molecular Weight | 382.43 |
| Appearance | Brownish red crystal | Assay | 80% min. |
| Max Absorption λ1 (pH 6.5) | 432~436 nm | Max Absorption λ2 (pH 8.5) | 571~574 nm |
| Loss on Drying | 0.2% max. | Residue on Ignition | 3.0% max. |
Key Advantages
High Purity
Ensures consistent assay levels of 80% min for reliable and repeatable laboratory results.
Rapid Response
Provides instantaneous color shifts for real-time monitoring of pH fluctuations in buffers.
Bio-Compatibility
Ideal for cell culture media and microbiological assays without interfering with metabolic processes.
Visual Precision
Clear transition from yellow (pH 8.8) for effortless visual detection.
Versatile Application
Efficiently used in titrations, agarose gel electrophoresis, and as a tracking dye.
Stable Solubility
Excellent solubility in ethanol, ensuring easy preparation of standard indicator solutions.
Product Gallery
Management Platforms
Inventory Control
Advanced tracking for specialized chemical stocks to ensure batch consistency.
Quality Assurance
Strict adherence to purity specifications and absorption wavelength standards.
Compliance Monitoring
Rigorous monitoring of chemical handling and environmental disposal regulations.
Logistics Tracking
Temperature and humidity-controlled shipping for sensitive organic intermediates.
Supply Chain Optimization
Streamlined sourcing for pharmaceutical and electroplating chemical intermediates.
Technical Support
Expert guidance on the application of pH indicators in complex biochemical assays.
Investment Return Comparison
| Evaluation Metric | Standard Grade | Premium Cresol Red |
|---|---|---|
| Detection Accuracy | Moderate | Ultra-High Precision |
| Batch Stability | Variable | Highly Consistent |
| Reaction Time | Slow | Near-Instantaneous |
| Compatibility | Limited | Universal Bio-Applicable |
| Operational Cost | Low Initial | High ROI via Accuracy |
Frequently Asked Questions
It is primarily used as a pH indicator in biochemical laboratories, cell culture media, and titration processes to monitor pH shifts between 7.2 and 8.8.
The change is caused by the protonation and deprotonation of its sulfonephthalein structure; it appears red in alkaline conditions and yellow in acidic conditions.
It is considered low-toxic, but standard PPE such as gloves and goggles should be worn to avoid mild skin or eye irritation.
Yes, it is frequently employed as a tracking dye in agarose gel electrophoresis to monitor the progress of the run.
Cresol Red exhibits excellent solubility in ethanol, which allows for the easy creation of precise working solutions.
Disposal must follow local environmental regulations for synthetic dyes to prevent water pollution through untreated release.
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