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Direct Black is a type of direct dye commonly used in the textile industry for coloring fabrics, particularly cotton and other cellulose fibers. These dyes are water-soluble and can be applied directly to the fabric without the need for a mordant, making them user-friendly and efficient for dyeing processes. Direct Black dyes are known for their deep, rich colors and excellent lightfastness properties, making them suitable for a variety of textile applications.
| Chemical composition | Azo compounds |
| Application method | Exhaust dyeing or continuous dyeing |
| Color fastness | Good to excellent light and wash fastness |
| Solubility | Water-soluble |
| Typical pH range | 4 to 8 |
When selecting Direct Black dyes, buyers should consider the specific fiber content of the textiles being dyed, as well as the desired color fastness and application method. It is important to specify the required shade, the quantity needed, and any necessary certifications for safety and environmental compliance. Additionally, buyers may want to inquire about the dye's compatibility with other chemicals used in the dyeing process.
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Direct Black dyes are primarily used on cotton and other cellulose fibers.
Select dyes with good to excellent light and wash fastness ratings and follow proper dyeing procedures.
Some Direct Black dyes may contain azo compounds, which can have environmental impacts; check for eco-friendly options.
They can be applied using exhaust dyeing or continuous dyeing methods.
Yes, Direct Black dyes can be mixed with other direct dyes to achieve desired shades.
A typical pH range for dyeing is between 4 to 8.