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HS Code |
337985 |
| Chemical Name | Direct Black 38 |
| Synonyms | C.I. Direct Black 38, Congo Corinne Extra, Direct Deep Black, Benzidine Black |
| Cas Number | 1937-37-7 |
| Molecular Formula | C34H24N6Na4O16S4 |
| Molecular Weight | 960.87 |
| Appearance | Dark black powder |
| Solubility | Soluble in water |
| Color Index Number | C.I. 30235 |
| Usage | Textile dyeing, paper dye, ink manufacture |
| Melting Point | Decomposes |
As an accredited Direct Black 38 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging for Direct Black 38 features a 25 kg woven plastic bag, labeled with product name, batch number, and safety information. |
| Shipping | Direct Black 38 is shipped in tightly sealed, moisture-proof containers such as drums or bags, typically weighing 25 kg. It should be stored in a cool, dry, and well-ventilated area, away from incompatible materials. Proper labeling and documentation are required for safe handling and compliance with transport regulations. |
| Storage | Direct Black 38 should be stored in a tightly closed container in a cool, dry, well-ventilated area, away from incompatible substances such as strong oxidizers. The storage area should protect against moisture and direct sunlight. Ensure containers are clearly labeled and prevent the release of dust into the environment. Proper personal protective equipment should be available when handling the material. |
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Purity 98%: Direct Black 38 with 98% purity is used in cotton textile dyeing, where it delivers deep black shades and high color consistency. Molecular Weight 616.5 g/mol: Direct Black 38 with a molecular weight of 616.5 g/mol is used in paper coloration, where it ensures uniform ink absorption and strong tinting strength. Melting Point 300°C: Direct Black 38 with a melting point of 300°C is used in wool fabric dyeing, where it provides excellent thermal stability during high-temperature processing. Water Solubility 50 g/L: Direct Black 38 with water solubility of 50 g/L is used in viscose rayon dyeing, where rapid dissolution ensures efficient dye bath preparation. pH Stability 5–9: Direct Black 38 stable at pH 5–9 is used in leather coloring, where it maintains color integrity across variable processing conditions. Fine Particle Size 10 µm: Direct Black 38 with a fine particle size of 10 µm is used in ink formulation, where it enhances dispersion and print sharpness. Light Fastness Grade 4: Direct Black 38 with light fastness grade 4 is used in cellulosic fiber dyeing, where it imparts resistance to color fading under light exposure. Salt Fastness Grade 3: Direct Black 38 with salt fastness grade 3 is used in printing pastes, where it minimizes color migration during saline treatments. Heat Resistance 180°C: Direct Black 38 with heat resistance up to 180°C is used in yarn dyeing, where it retains shade intensity after steam finishing. Stability Temperature 60°C: Direct Black 38 stable at 60°C is used in continuous dyeing processes, where it prevents premature degradation, ensuring effective and consistent coloration. |
Competitive Direct Black 38 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!
