Acid Blue 40 (CAS 6424-85-7): Comprehensive User Guide
Table of Contents
1. Product Overview & Specifications
Acid Blue 40 (CAS 6424-85-7) is a sulfonated anthraquinone dye widely used in textile, biological staining, and industrial applications.
| Parameter | Acid Blue 40 | Acid Blue 25 | Acid Blue 80 |
|---|---|---|---|
| Molecular Formula | C32H22N2Na2O8S2 | C20H13N2NaO5S | C22H14N3NaO6S |
| λmax (nm) | 635-640 | 595-600 | 610-615 |
| Lightfastness | Grade 6-7 | Grade 5 | Grade 6 |
2. Key Industrial Applications
- Textile Dyeing: Superior affinity for protein fibers (wool/silk) with pH stability in 2-5 range
- Biological Staining: 0.1-0.5% solutions for cellular structure visualization
- Ink Manufacturing: 15-20% pigment loading for high-intensity printing
3. Operational Protocols
Textile Application:
- Prepare dye bath at 40°C with 1-3% dye concentration
- Adjust pH to 3.5 using acetic acid
- Gradually increase temperature to 95°C over 45 minutes
4. Implementation Scenarios
Wool Carpet Manufacturing:
Enables color depth of 1.8 OD units at 0.8% dye concentration
5. Verified Customer Implementations
| Client | Industry | Results Achieved |
|---|---|---|
| Guangzhou Textile Co. | Apparel Manufacturing | 30% reduction in dye migration |
| Shanghai BioTech Labs | Research | Improved staining resolution by 40% |
6. Request Technical Consultation
Contact our dye specialists for formulation support:
(86) 15866781826
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