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HS Code |
357641 |
| Chemical Name | Direct Black HEF |
| Color Index Number | C.I. Direct Black 22 |
| Appearance | Black powder or granules |
| Solubility | Soluble in water |
| Application | Textile dyeing (cotton, viscose, and blends) |
| Chemical Formula | C44H32N13Na5O17S5 |
| Molecular Weight | 1206.07 g/mol |
| Light Fastness | Moderate to good |
| Bulk Density | Approx. 0.60 g/cm³ |
| Ph Value | 7-9 (1% solution) |
| Dye Class | Direct dye |
| Strength | 100% standard |
As an accredited Direct Black HEF factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Direct Black HEF is packaged in a 25 kg net weight woven plastic bag, featuring clear labeling and protective inner lining. |
| Shipping | Direct Black HEF is typically shipped in tightly sealed fiber drums or plastic bags, lined with polyethylene to prevent moisture absorption. Packages are clearly labeled and handled as non-hazardous, but care is taken to keep them dry and ventilated during transport. Store away from strong oxidizers and direct sunlight. |
| Storage | Direct Black HEF should be stored in a cool, dry, and well-ventilated area, away from sources of heat and incompatible materials such as strong oxidizers. Keep the container tightly closed, protected from moisture and direct sunlight. Store at room temperature, and ensure proper labeling. Use suitable personal protective equipment when handling, and follow all relevant safety guidelines for chemical storage. |
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Purity 98%: Direct Black HEF with purity 98% is used in cotton fabric dyeing, where it ensures high color yield and consistent shade reproducibility. Particle Size 150 µm: Direct Black HEF with particle size 150 µm is used in textile printing, where it promotes uniform dispersion and sharp pattern definition. pH 6.5: Direct Black HEF with pH 6.5 is used in viscose yarn dyeing, where it provides optimal dye fixation and deep black tones. Solubility 40 g/L: Direct Black HEF with solubility 40 g/L is used in paper coloration, where it achieves homogeneous color distribution and vibrant appearance. Lightfastness Grade 5: Direct Black HEF with lightfastness grade 5 is used in cellulosic fiber dyeing, where it delivers excellent resistance to fading under sunlight. Stability Temperature 90°C: Direct Black HEF with stability temperature 90°C is used in high-temperature continuous dyeing, where it maintains dye integrity and prevents decomposition. Moisture Content ≤1%: Direct Black HEF with moisture content ≤1% is used in leather finishing, where it enhances shelf life and dyeing reliability. Conductivity 300 µS/cm: Direct Black HEF with conductivity 300 µS/cm is used in salt-free dye baths, where it supports consistent dye migration and improved leveling. |
Competitive Direct Black HEF prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615651039172 or mail to sales9@bouling-chem.com.
We will respond to you as soon as possible.
Tel: +8615651039172
Email: sales9@bouling-chem.com
Flexible payment, competitive price, premium service - Inquire now!
