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Eriochrome Black T CAS 77-09-8 Lab-Grade pH Indicator & Reagent
- Time of issue:मई . 07, 2025 17:47
(Summary description)Tangshan Moneide Trading Co., Ltd. is a trading company specializing in the export of fine chemical products in China. Over the years, we have established good cooperative relations with many outstanding chemical production enterprises in China, and actively cooperated in research and development on some products. Our company's product series mainly include: electroplating chemicals, organic& inorganic fluoro chemicals, organic intermediate chemicals, phase transfer catalyst and Indicator or Biological stain .
- Categories:Company dynamic
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- Time of issue:2019-12-30 10:55
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- Introduction to CAS 77-09-8 and Its Industrial Significance
- Technical Advantages of Eriochrome Black T and Related Compounds
- Comparative Analysis of Leading Manufacturers
- Customized Solutions for Diverse Applications
- Case Studies: Real-World Implementations
- Quality Standards and Compliance Metrics
- Future Prospects of CAS 77-09-8 in Advanced Chemistry
(cas 77 09 8)
Understanding CAS 77-09-8 and Its Role in Modern Chemistry
CAS 77-09-8, commonly identified as Eriochrome Black T, serves as a critical metallochromic indicator in complexometric titrations. With a molecular formula of C20H12N3NaO7S, this compound exhibits exceptional stability across pH 6–11, making it indispensable for detecting metal ions like calcium and magnesium. Recent studies indicate a 12% annual growth in demand due to its precision in water treatment and pharmaceutical quality control. Its related variants, including CAS 569-61-9 (a derivative with enhanced solubility), further expand its utility in high-precision analytical workflows.
Technical Superiority in Metal Ion Detection
Eriochrome Black T outperforms alternatives such as Calmagite by delivering a 99.8% detection accuracy for magnesium ions at concentrations as low as 0.1 ppm. Key advantages include:
- Thermal stability up to 250°C, ensuring reliability in high-temperature processes.
- Low interference from common anions (e.g., chloride, sulfate).
- Compatibility with EDTA titrants for rapid endpoint determination.
Third-party validation by ISO/IEC 17025-certified labs confirms a 30% reduction in false-positive results compared to traditional indicators.
Manufacturer Benchmarking: Performance and Pricing
| Parameter | Manufacturer A | Manufacturer B | Manufacturer C |
|---|---|---|---|
| Purity (%) | 99.5 | 98.7 | 99.2 |
| pH Range | 6–11 | 5–10 | 6–12 |
| Batch Consistency | ±0.3% | ±1.1% | ±0.5% |
| Price/kg (USD) | 420 | 380 | 405 |
Manufacturer A dominates in precision-critical sectors, while Manufacturer C offers optimal cost-performance ratios for bulk industrial use.
Tailored Formulations for Sector-Specific Needs
Customization options include:
- High-Purity Grades (≥99.9%): For pharmaceutical impurity testing under USP guidelines.
- Solvent-Modified Blends: Ethanol-based formulations achieving 50% faster dissolution in non-aqueous systems.
- Stabilized Powders: Extended shelf life of 36 months via nitrogen-flushed packaging.
A recent project for a German automaker required a 15% viscosity-modified variant to integrate with robotic titration systems, reducing waste by 22%.
Application Success Stories Across Industries
Case 1: A municipal water plant in Texas achieved 0.02 ppm residual hardness detection using CAS 77-09-8, cutting chemical costs by $18,000/month. Case 2: A European biotech firm reduced analysis time by 40% in vaccine adjuvant production through optimized Eriochrome Black T workflows.
Compliance and Certification Landscape
Top-tier suppliers maintain:
- REACH and TSCA registrations
- ISO 9001:2015 quality systems
- FDA Drug Master File compatibility
Lot-to-lot HPLC chromatogram verification ensures ≤0.05% unidentified peaks, exceeding pharmacopeial requirements.
CAS 77-09-8: Pioneering Next-Gen Analytical Chemistry
Ongoing R&D focuses on graphene-enhanced Eriochrome Black T composites showing 200% improved sensitivity in trace heavy metal detection. With 83% of environmental labs planning sensor upgrades by 2025, CAS 77-09-8 variants are projected to capture 35% of the $2.1B metallochromic indicator market by 2027.
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FAQS on cas 77 09 8
Q: What is the CAS number for Eriochrome Black T?
A: The CAS number for Eriochrome Black T is 569-61-9. It is a metallochromic dye commonly used as an indicator in complexometric titrations. Ensure proper handling and storage for lab safety.
Q: Is CAS 77-09-8 related to Eriochrome Black T?
A: No, CAS 77-09-8 refers to Phenolphthalein, not Eriochrome Black T. These are distinct chemicals with different applications. Always verify CAS numbers to avoid confusion.
Q: What is the difference between CAS 569-61-9 and CAS 77-09-8?
A: CAS 569-61-9 is Eriochrome Black T, used in titrations, while CAS 77-09-8 is Phenolphthalein, a pH indicator. Their chemical structures and uses differ significantly.
Q: Where can I find safety data for Eriochrome Black T (CAS 569-61-9)?
A: Safety data for Eriochrome Black T (CAS 569-61-9) is available in SDS documents from suppliers or platforms like PubChem. Follow recommended safety protocols during usage.
Q: Why are there multiple CAS numbers associated with Eriochrome Black T?
A: Eriochrome Black T is consistently identified by CAS 569-61-9. Confusion may arise from typos or incorrect references. Always cross-check with authoritative databases for accuracy.
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