Acid Red 37 (CAS 6360-07-2) Ultimate User Guide
Table of Contents
1. Product Specifications & Comparative Analysis
| Parameter | Acid Red 37 | Comparative Dyes |
|---|---|---|
| CAS Number | 6360-07-2 | Acid Red 88: 1658-56-6 |
| Molecular Formula | C18H15N3Na2O7S2 | Varies by dye class |
| Molecular Weight | 519.43 g/mol | 450-600 g/mol range |
| Solubility (Water) | ≥50 g/L (20°C) | Typical: 30-80 g/L |
| pH Stability | 2.5-6.0 | Varies by application |
2. Industrial Applications & Functional Properties
Primary Applications:
- Textile dyeing: Nylon, silk, wool (excellent wash fastness)
- Leather processing: Even penetration for uniform coloration
- Paper coloration: pH-resistant printing applications
- Biological staining: Histopathology applications
Performance Advantages:
- Superior lightfastness (Grade 4-5 on ISO scale)
- High exhaustion rate (>85% at 80°C)
- Low electrolyte sensitivity
3. Operational Guidelines & Best Practices
Standard Application Protocol:
- Prepare dye bath at 40°C with 1-3% owf dye concentration
- Maintain liquor ratio 1:20 to 1:30
- Gradually raise temperature to 80-85°C over 30 mins
- Maintain peak temperature for 45-60 mins
- Cool to 60°C before rinsing
Safety Precautions:
- Use NIOSH-approved respirators when handling powder form
- Maintain adequate ventilation (≥10 air changes/hour)
- Store in sealed containers at 15-25°C
4. Case Studies: Successful Implementations
Case 1: Textile Manufacturer (Guangzhou, China)
- Challenge: Achieving color consistency across nylon blends
- Solution: 1.2% Acid Red 37 with modified leveling agent
- Result: 92% first-pass quality rate, 18% dye cost reduction
Case 2: Leather Processor (Naples, Italy)
- Challenge: Eliminating dye migration in automotive upholstery
- Solution: Acid Red 37 in combination with cationic fixatives
- Result: Passed ISO 105-X12 rub fastness tests
Case 3: Specialty Paper Mill (Osaka, Japan)
- Challenge: Maintaining color vibrancy in alkaline paper coatings
- Solution: Acid Red 37 with pH-buffering system
- Result: ΔE < 1.0 after 6 months accelerated aging
5. Technical Support & Inquiry
For technical specifications sheets or customized formulation assistance:
- Email: info@vivalr.com
- Tel: (86) 15866781826
Request free sample or discuss bulk order discounts:
- Minimum sample order: 100g
- MOQ for bulk orders: 25kg drum
- Lead time: 3-5 working days (stocked item)



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