Reactive Blue 19 (CAS: 2580-78-1) is a critical component in the textile coloration industry, prized for its vibrant blue shade and robust performance characteristics. As a leading manufacturer and supplier of this anthraquinone dye, we are committed to providing high-quality products that meet the stringent demands of textile production. Understanding the detailed properties and diverse applications of Reactive Blue 19 is essential for any manufacturer looking to optimize their dyeing and printing processes.

The physical form of Reactive Blue 19 is a dark blue crystalline powder. Its solubility in water is notable, with a concentration of 220 g/L at 20°C, which facilitates its effective use in aqueous dyeing systems. Chemically, it belongs to the reactive dye class, meaning it forms a covalent bond with the fibers it colors. This chemical linkage is the key to its excellent fastness properties. Specifically, Reactive Blue 19 is recognized for its superior lightfastness, with ISO ratings often reaching 7, and good perspiration fastness, typically rated 4-5. This ensures that textiles dyed with it will maintain their color integrity even under challenging conditions, such as prolonged exposure to sunlight or moisture.

The primary applications for Reactive Blue 19 lie within the textile sector. It is extensively used for dyeing cellulose-based fibers, including cotton, viscose, and linen, through various methods. Exhaust dyeing, where the fabric is immersed in the dye liquor, and cold pad-batch dyeing are common techniques that yield excellent depth and levelness of color. In textile printing, it is equally valuable, enabling the creation of bright, well-defined patterns with high fixation and wash durability. Its use extends to home textiles like towels and curtains, where its vibrancy and fastness are highly desirable. For garment dyeing, it provides attractive, stable blue shades that are fashionable and long-lasting.

When considering purchasing Reactive Blue 19, partnering with a reliable manufacturer and supplier in China offers significant advantages. These suppliers often provide the dye with a purity of 97% or higher, ensuring consistent color yield and performance. They also typically offer competitive pricing, making it an economically viable option for both small and large-scale operations. By understanding the technical specifications and application nuances of Reactive Blue 19, manufacturers can confidently integrate it into their production lines to achieve superior textile coloration. If you are looking to buy Reactive Blue 19, our company stands ready to supply you with a high-quality product backed by our manufacturing expertise.