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Direct Blue 71 is a synthetic dye commonly used in the textile industry for coloring fabrics, particularly cotton and other cellulose fibers. It is known for its vibrant blue hue and excellent lightfastness, making it suitable for various applications in dyeing processes. This dye is typically applied using a direct dyeing method, which allows for easy application without the need for complex mordants or fixation agents.
| Chemical formula | C34H34N2Na2O6S2 |
| Color index | Direct Blue 71 |
| Solubility | Water-soluble |
| pH range | 4 to 7 |
| Lightfastness | Good |
| Application method | Exhaust dyeing |
When selecting Direct Blue 71, buyers should consider the specific application requirements, including the type of fabric to be dyed and the desired shade intensity. It is important to specify the required lightfastness and washfastness levels, as well as any environmental regulations that may apply. Quantities can vary depending on the scale of production, so it's advisable to discuss this with suppliers to determine the most cost-effective options.
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It is primarily used on cotton and other cellulose fibers.
It is essential to check for specific environmental certifications as formulations may vary.
It is typically applied using an exhaust dyeing method.
It generally has good lightfastness, suitable for many applications.
It is primarily designed for dyeing rather than printing.
Shelf life can vary, but it is typically stable for 1-2 years when stored properly.