5-Amino-1-naphthalenesulfonic Acid Cas 84-89-9

5-Amino-1-naphthalenesulfonic Acid (CAS 84-89-9) Comprehensive Guide

Table of Contents

• 1. Product Overview & Comparative Analysis
• 2. Applications & Industrial Uses
• 3. Usage Scenarios by Industry
• 4. Customer Case Studies
• 5. Technical Inquiries & Purchasing Guidance

1. Product Overview & Comparative Analysis

2. Applications & Industrial Uses

2.1 Dye Manufacturing

Critical intermediate for acid dyes and reactive dyes, particularly in wool and nylon coloration. Enables chromophore formation through diazotization reactions.

2.2 Pharmaceutical Synthesis

Used in production of:

• Anticancer drug intermediates
• Sulfa antibiotic precursors
• Fluorescent probes for bioimaging

2.3 Analytical Chemistry

Chromogenic reagent for metal ion detection (e.g., aluminum, iron) in spectrophotometric analysis.

3. Usage Scenarios by Industry

3.1 Textile Dye Production

Typical process flow:

1. Diazotization at 0-5°C with NaNO₂/HCl
2. Coupling reaction with aromatic amines
3. Salting-out and filtration

3.2 Pharmaceutical Intermediate Synthesis

Key reaction steps:

• Protection of amino group
• Sulfonation position-specific reactions
• Purification via recrystallization

4. Customer Case Studies

4.1 Specialty Dye Manufacturer (India)

Challenge: Required high-purity (>99%) batch consistency for export-grade acid dyes
Solution: Customized purification protocol implementation
Result: Achieved 99.3% purity with ±0.2% batch variation

4.2 European Pharma Company (Germany)

Challenge: Trace metal content below 10ppm for GMP compliance
Solution: Ion-exchange treatment process
Result: Consistently met 8ppm maximum impurity level

4.3 US Research Institute (California)

Challenge: Small-scale quantities (100g) with HPLC certification
Solution: On-demand synthesis with analytical documentation
Result: Enabled 12 successful drug discovery projects

5. Technical Inquiries & Purchasing Guidance

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