Vat Black
Vat Black: The Ultimate Solution for Your Industrial Needs
Vat Black is a premium-grade industrial dye specifically formulated for high-performance applications. With its exceptional color stability and durability, Vat Black sets the industry standard for deep, rich black shades that withstand the toughest conditions.
Product Specifications
- Chemical Type: Vat dye
- Color Index: Vat Black 1
- Molecular Formula: C34H18N2O6
- Appearance: Fine black powder
- Solubility: Insoluble in water (requires reduction for application)
- Lightfastness: 7-8 (ISO 105-B02)
- Washfastness: 4-5 (ISO 105-C06)
- pH Stability: 3-11
Technical Performance Data
| Property | Test Method | Result |
|---|---|---|
| Color Strength | ISO 105-J03 | 100±5% |
| Migration | AATCC 140 | Class 5 |
| Crocking (Dry) | AATCC 8 | Class 4-5 |
| Croaking (Wet) | AATCC 116 | Class 4 |
| Heat Resistance | ISO 105-P01 | 200°C |
Application Parameters
| Application Method | Concentration | Temperature | Time |
|---|---|---|---|
| Exhaust Dyeing | 1-3% owf | 50-60°C | 45-60 min |
| Padding | 20-50 g/L | Room Temp | N/A |
| Printing | 5-10% | Steam at 102°C | 8-10 min |
Vat Black FAQ
What makes Vat Black superior to other black dyes?
Vat Black offers unmatched color depth and superior fastness properties compared to other black dyes. Its molecular structure provides excellent resistance to light, washing, and chemical exposure, making it ideal for applications requiring long-lasting color. The dye maintains its rich black hue even after repeated wash cycles and prolonged sun exposure, outperforming direct dyes and reactive blacks in most industrial applications.
How should Vat Black be stored for optimal performance?
Vat Black should be stored in its original packaging in a cool, dry place away from direct sunlight. The storage area should maintain a temperature between 5°C and 30°C with relative humidity below 65%. Always keep containers tightly sealed when not in use to prevent moisture absorption, which could affect the dye's performance. Under proper storage conditions, Vat Black maintains its quality for up to 24 months from the manufacturing date.
What safety precautions should be taken when handling Vat Black?
When handling Vat Black, workers should wear appropriate PPE including dust masks (NIOSH N95 or equivalent), chemical-resistant gloves, and safety goggles. The work area should be well-ventilated to prevent inhalation of dye particles. In case of skin contact, wash immediately with plenty of water. For eye contact, rinse cautiously with water for several minutes and seek medical attention. Always consult the Material Safety Data Sheet (MSDS) for complete handling instructions and emergency procedures specific to Vat Black.
Recommended Auxiliaries for Vat Black
- Reducing Agent: Sodium hydrosulfite (85% purity or higher)
- Wetting Agent: Non-ionic surfactant (1-2 g/L)
- Leveling Agent: Special vat dye leveler (0.5-1.5 g/L)
- Alkali: Sodium hydroxide (caustic soda) for pH adjustment
Environmental Compliance
Vat Black meets all international environmental standards including REACH, OEKO-TEX Standard 100, and ZDHC MRSL compliance. The dye contains no restricted aromatic amines (tested according to EN 14362) and is free from heavy metals beyond the limits specified in ecological requirements.