Comprehensive Guide to 8-Hydroxyquinoline-5-sulfonic Acid
Table of Contents
- 1. Product Overview & Specifications
- 2. Key Applications & Industrial Uses
- 3. Performance Comparison with Alternatives
- 4. Operational Guidelines & Safety Protocols
- 5. Real-World Application Case Studies
- 6. Technical Consultation & Ordering
1. Product Overview & Specifications
| Parameter | Specification |
|---|---|
| Chemical Name | 8-Hydroxyquinoline-5-sulfonic acid |
| CAS Number | 84-88-8 |
| Molecular Formula | C9H7NO4S |
| Appearance | Light yellow crystalline powder |
| Solubility | Water: >100 g/L (20°C) |
2. Key Applications & Industrial Uses
2.1 Analytical Chemistry
Primary uses in metal ion chelation for spectrophotometric analysis of Fe³⁺, Al³⁺, and Cu²⁺ with detection limits ≤0.1 ppm.
2.2 Pharmaceutical Intermediate
Critical component in synthesizing antimalarial drugs and MRI contrast agents, demonstrating >98% purity in API production.
2.3 Industrial Water Treatment
Effective biocide in cooling towers at 50-200 ppm concentration, reducing microbial growth by 99.7% within 24 hours.
3. Performance Comparison with Alternatives
| Property | 8-HQ-5-SA | 8-Hydroxyquinoline | Quinolin-8-ol sulfate |
|---|---|---|---|
| Water Solubility | High (>100g/L) | Low (0.5g/L) | Moderate (25g/L) |
| pH Stability | 2-10 | 4-8 | 3-9 |
4. Operational Guidelines & Safety Protocols
4.1 Handling Requirements
Use NIOSH-approved N95 respirators when handling powder form. Maintain workplace concentration below 5mg/m³ (OSHA PEL).
4.2 Storage Conditions
Store in airtight containers at 15-25°C with ≤60% humidity. Shelf life: 36 months in original packaging.
5. Real-World Application Case Studies
Case 1: Pharmaceutical Manufacturer (Germany)
Challenge: Required high-purity metal chelating agent for contrast agent synthesis
Solution: Implemented 8-HQ-5-SA at 0.2mol% concentration
Result: Achieved 99.92% API purity with 18% yield improvement
Case 2: Semiconductor Plant (Taiwan)
Challenge: Copper ion contamination in process water (≥5ppm)
Solution: Added 150ppm 8-HQ-5-SA in purification system
Result: Reduced Cu²⁺ levels to <0.05ppm within 3 operational cycles
6. Technical Consultation & Ordering
Our chemical engineers provide:
- Custom formulation development
- Bulk pricing (100kg+ orders)
- Regulatory compliance documentation
Contact our specialists:
Email: info@vivalr.com
Tel: (86) 15866781826


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