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HS Code |
910650 |
| Chemical Name | Direct Black OB |
| Cas Number | 2429-74-5 |
| Molecular Formula | C32H20N6Na4O14S4 |
| Appearance | Black powder or granules |
| Solubility | Soluble in water |
| Application | Textile dyeing |
| Dye Class | Direct dye |
| Molecular Weight | 932.82 g/mol |
| Light Fastness | Moderate |
| Melting Point | Decomposes |
| Ec Number | 219-416-8 |
| Stability | Stable under recommended storage conditions |
As an accredited Direct Black OB factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Direct Black OB is packaged in 25 kg net weight fiber drums, securely lined with plastic bags to prevent moisture and contamination. |
| Shipping | Direct Black OB is typically shipped in tightly sealed, moisture-resistant bags or drums, often made of fiber, plastic, or metal, to prevent contamination and moisture absorption. Containers are clearly labeled with hazard information. It should be transported in a dry, cool environment and handled according to chemical safety regulations. |
| Storage | Direct Black OB should be stored in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and incompatible substances such as oxidizing agents. The container should be tightly sealed to avoid moisture absorption and contamination. Properly label the storage area and container, and ensure that the chemical is kept away from foodstuffs and out of reach of unauthorized personnel. |
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Purity 98%: Direct Black OB with 98% purity is used in cotton textile dyeing, where it delivers deep and uniform black coloration with high shade consistency. Particle Size 20 microns: Direct Black OB with 20 micron particle size is used in water-based ink formulations, where it enhances dispersion and prevents nozzle clogging. Stability Temperature 120°C: Direct Black OB stable up to 120°C is used in high-temperature dye baths, where it maintains color strength without degradation. Molecular Weight 615 g/mol: Direct Black OB of 615 g/mol molecular weight is used in paper manufacturing, where it ensures excellent color fastness and print quality. Solubility in Water 50 g/L: Direct Black OB with 50 g/L water solubility is used in reactive dye processes, where it improves processing efficiency and results in even dye uptake. Melting Point 140°C: Direct Black OB with 140°C melting point is used in the production of color concentrates, where it ensures thermal stability during extrusion. Viscosity Grade Low: Direct Black OB of low viscosity grade is used in inkjet printing, where it provides smooth ink flow and high-resolution printing. |
Competitive Direct Black OB 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!
