Product Description
Direct Blue 71 Dyes belong to the category of Dyes having CAS number 4399-55-7. The synonym of Direct Blue 71 Dyes is Direct Fast Blue B2RL, Direct Navy BlueL-3RB, Direct Fast Blue B2R,Sirius Blue S-BRR, Direct Fast Blue 2RL, Solophenyl Blue GL. The molecular weight of Direct Blue 71 Dyes is 1029.87 g/mol and the molecular formula is C40H23N7Na4O13S4. The colour index number is 34140. The physical appearance of Direct Blue 71 Dyes is Blue Gray.Versatile Application Across IndustriesDirect Blue 71 caters to diverse industries such as textiles, leather, and paper. Its compatibility with cellulosic fibers makes it a preferred choice for cotton dyeing, as well as coloring silk and leather products. Thanks to its moderate resistance to alkalis and medium water and rubbing resistance, this dye ensures reliable performance in various manufacturing settings.
Safety and Quality AssuranceManufactured under ISO 9001 certification, Direct Blue 71 is produced with stringent quality controls. Although it exhibits negligible lead content, safety measures such as using gloves and a mask during handling are recommended due to its poisonous nature. The product's purity (99%) and moisture content (max 1.5%) make it a dependable option for industrial processes.
FAQ's of Direct Blue 71:
Q: How should Direct Blue 71 be safely handled and stored?
A: Direct Blue 71 should be handled using protective gloves and a mask, as it is classified as poisonous. For storage, keep the product in its original 25 kg HDPE bags in a cool, dry place to maintain its effectiveness and ensure a shelf life of up to two years.
Q: What types of materials are most compatible with Direct Blue 71?
A: Direct Blue 71 is ideally suited for cellulosic fibers, making it excellent for dyeing cotton, as well as other materials such as silk, paper, and leather. Its solubility in water and strong color yield make it a versatile choice for multiple dyeing applications.
Q: When is Direct Blue 71 preferred over other dyes in industrial applications?
A: This dye is often chosen when reliable color consistency, moderate alkali resistance, and good light fastness (3-4) are desired. Its high purity and compliance with quality standards make it suitable for both small- and large-scale industrial dyeing operations.
Q: Where is Direct Blue 71 commonly used?
A: Direct Blue 71 is widely used in the textile industry for dyeing cotton fabrics, in the paper sector for coloration, and in leather processing. It is supplied by exporters, manufacturers, importers, and suppliers throughout India, serving both domestic and international markets.
Q: What is the process for using Direct Blue 71 in dyeing applications?
A: To use Direct Blue 71, dissolve the powder in water (pH 7-8 for a 1% solution), then proceed with the standard dyeing process suitable for the chosen substrate (cotton, paper, silk, or leather). Ensure all safety measures are followed during preparation and handling.
Q: What are the key benefits of choosing Direct Blue 71?
A: The dye offers a bright, stable blue coloration with good color yield, moderate resistance to alkalis, and medium fastness to water and rubbing. It is manufactured according to ISO 9001 standards and contains lead below detectable limits, making it a reliable and safe industrial solution.