Acid Dyes
Premium Acid Dyes for Vibrant Textile Coloring
Acid dyes represent the gold standard in textile coloring, offering exceptional vibrancy and colorfastness for wool, silk, nylon and other protein fibers. Our professional-grade acid dyes deliver superior results for industrial applications and boutique dyeing projects alike.
Key Product Specifications
- Chemical Type: Anionic dyes
- pH Range: 3.5-5.5 (optimal results)
- Solubility: 100% water soluble
- Lightfastness: 6-7 (ISO 105-B02)
- Washfastness: 4-5 (ISO 105-C06)
- Particle Size: ≤ 5 microns
- Shelf Life: 36 months in proper storage
| Color Index | Shade | Strength | Recommended Usage |
|---|---|---|---|
| Acid Red 18 | Brilliant Red | 150% | 1-3% of fabric weight |
| Acid Blue 25 | Royal Blue | 200% | 0.5-2% of fabric weight |
| Acid Yellow 23 | Lemon Yellow | 100% | 2-4% of fabric weight |
Acid Dyes FAQ
Q: What's the difference between acid dyes and other dye types?
A: Acid dyes are specifically formulated for protein fibers through ionic bonding. Unlike reactive dyes that form covalent bonds or direct dyes that use physical absorption, acid dyes create electrostatic attractions between their sulfonic acid groups and the amino groups in fibers. This results in superior color penetration and washfastness on wool, silk and nylon.
Q: How should I prepare dye baths for acid dyes?
A: For optimal results with acid dyes, maintain these conditions: Use soft water (0-50 ppm hardness), heat to 40°C before adding dye, dissolve dye powder separately before adding to bath, maintain pH between 3.5-5.5 using acetic acid or formic acid, use 1-2% leveling agent, and raise temperature gradually to 95-100°C over 45 minutes.
Advanced Technical Specifications
| Parameter | Test Method | Results |
|---|---|---|
| Migration Properties | AATCC 140 | Excellent (Rating 5) |
| Perspiration Fastness | ISO 105-E04 | 4-5 (Alkaline & Acid) |
| Chlorinated Water Resistance | ISO 105-E03 | 4 |
Q: Can acid dyes be used for food-grade applications?
A: Standard acid dyes are not approved for food contact. However, we offer specialty FDA-compliant versions (21 CFR 74) for specific food packaging applications. These undergo rigorous testing for heavy metals and extractable substances. Always verify regulatory compliance for your specific application and jurisdiction before use.
Color Matching Capabilities
Our acid dyes system includes 36 standardized shades covering the complete color spectrum. Custom color matching services are available with the following specifications:
- Color deviation: ≤ 1.0 CIELAB units
- Metamerism index: ≤ 0.5 under D65/A illuminants
- Batch-to-batch consistency: ≤ 0.3 DE
- Minimum order quantity: 25kg per shade
For professional dyers seeking consistent, vibrant coloration with excellent wash and light fastness, our acid dyes provide the perfect solution. The ionic bonding mechanism ensures deep penetration and uniform dyeing across all protein fibers.