Naphthol AS-E (CAS 92-78-4): Comprehensive User Guide
Table of Contents
1. Product Overview & Specifications
Naphthol AS-E (CAS 92-78-4) is a high-purity chemical intermediate primarily used in dye synthesis and specialty coatings. Key parameters include:
| Parameter | Naphthol AS-E | Generic Alternatives |
|---|---|---|
| Purity | ≥99.5% | 95-98% |
| Melting Point | 217-220°C | 210-215°C |
| Solubility | 0.1 g/L (20°C in water) | 0.05-0.08 g/L |
2. Key Applications & Industrial Uses
2.1 Dye Manufacturing
As coupling component for azo dyes in textile processing, providing enhanced lightfastness.
2.2 Pigment Production
Critical intermediate for high-performance organic pigments in automotive coatings.
3. Performance Comparison
| Feature | AS-E | AS-BS | AS-OL |
|---|---|---|---|
| Color Yield | Superior | Medium | Low |
| Thermal Stability | 300°C | 280°C | 260°C |
4. Practical Usage Scenarios
4.1 Textile Dyeing Process
Optimal usage ratio: 2-3% weight of fabric with pH maintained at 4.5-5.5.
5. Verified Customer Case Studies
Case 1: Zhejiang Textile Solutions Co.
Challenge: Fading issues in outdoor fabrics
Solution: Implemented AS-E based dyes at 2.8% concentration
Result: 40% improvement in UV resistance
Case 2: Guangdong Coating Materials Ltd.
Challenge: Thermal degradation in automotive paints
Solution: AS-E modified pigment formulation
Result: Withstood 350°C spray-drying processes
6. Technical Support & Inquiry
Contact our chemical engineers for formulation guidance or bulk pricing:
Email: info@vivalr.com
Tel: (86) 15866781826
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