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Direct Black 38 is a synthetic dye commonly used in the textile industry for coloring cotton and other cellulosic fibers. It is part of the direct dye category, which means it can be applied directly to the fabric without the need for a mordant. This dye is known for its deep black color and excellent lightfastness, making it suitable for a variety of applications in textiles. It is typically used in the production of garments, home textiles, and other fabric products that require a rich, dark hue.
| Chemical composition | Azo compound |
| Color fastness | Good to excellent lightfastness |
| Solubility | Soluble in water |
| Application method | Exhaust dyeing and padding |
| pH range for application | 4.5 to 7.5 |
When selecting Direct Black 38, consider the specific fiber content of the textiles to be dyed, as this can affect the dye uptake and final color. It is also important to specify the desired level of color fastness and any applicable industry standards or certifications. Buyers should request samples to test on their materials and specify the quantity needed for production runs to ensure adequate supply.
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It is primarily used on cotton and other cellulosic fibers.
It is important to check for specific environmental certifications, as some azo dyes can be harmful.
Direct Black 38 is usually applied through exhaust dyeing or padding methods.
Proper fixation and post-treatment processes can enhance color fastness.
Yes, it can be used in printing processes with appropriate formulations.
Typically, it has a shelf life of 1-2 years when stored properly.