Eriochrome Black T CAS 77-09-8 Lab-Grade pH Indicator & Reagent

• 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

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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

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:

1. High-Purity Grades (≥99.9%): For pharmaceutical impurity testing under USP guidelines.
2. Solvent-Modified Blends: Ethanol-based formulations achieving 50% faster dissolution in non-aqueous systems.
3. 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.