Direct Blue 199 - High-Quality Direct Fast Dye from China Suppliers and Factory, Blue Powder - CAS 12222-04-7
Physical and Chemical Properties
Direct Blue 199 is highly soluble in hot water and can be dissolved in cold water. The aqueous solution presents a vivid emerald blue color; it is insoluble in organic solvents and dissolves quickly without precipitation or agglomeration.
The aqueous solution is stable and resistant to neutral and weakly alkaline environments; it slightly changes color upon contact with strong acid, and returns to its original color after dilution; it has strong acid-base adaptability and wide process compatibility.
Direct Blue 199 has excellent affinity for cellulose fibers such as cotton, viscose, and linen; the dyeing rate is optimal at 90–100°C, with good uniformity and full color deposition; the color is pure, bright, and greenish-blue, with transparent color; it has strong compatibility and is suitable for color matching and color adjustment, with stable color and no deviation.
Core Advantages
Direct Blue 199 has excellent resistance to sunlight and a high resistance to fading; it has a superior color fastness due to its phthalocyanine structure; it has excellent solubility, suitable for continuous dyeing and intermittent dyeing of woven and knitted fabrics; it has low wastewater pressure and is friendly to low-salt formulations, suitable for environmentally friendly production; it is versatile and suitable for multiple industries such as leather, paper, and textiles, with high cost-effectiveness.
Performance Characteristics
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Bright color: The emerald blue color is pure, bright, and of high saturation.
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Excellent resistance to sunlight: Sunlight fastness is 6–7 grades, stable in outdoor / sunlight environments.
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Direct dyeing: Direct Blue 199 has high affinity for cellulose fibers, requiring no mordanting.
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Good compatibility: Direct Blue 199 can be used for color matching and color adjustment with other direct dyes, with stable color.
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Widely applicable: It can be used in textiles, paper, leather, and other industries.
Color Fastness Reference
Application Scope
Textiles & Printing: Dyeing and printing of cotton, viscose, artificial cotton, non-woven fabrics, and linen fibers. Direct Blue 199 is used in home textiles, knitted fabrics, towels, and decorative fabrics in the green color series.
Paper Industry: Coloring of packaging paper, art paper, special paper, and cultural paper, delivering bright and transparent color.
Leather Dyeing: Suitable for natural leather, artificial leather, shoe leather, and surface leather of luggage bags, providing full color coverage.
Other Uses: Water-based industrial coloring, electro-aluminum, bamboo and wood fibers, and water-based pigment color paste blending.
Key Process Points
First, stir Direct Blue 199 with warm water to fully dissolve it, avoiding local agglomeration.
The best environment is neutral to weakly alkaline.
Regular 95–100°C constant temperature dyeing to improve dyeing rate and fastness.
For dark products, it is recommended to use a dedicated fixing agent to significantly improve water wash and sweat fastness.
Frequently Asked Questions
What are the solubility characteristics of Direct Blue 199?
Direct Blue 199 is highly soluble in hot water and can also dissolve in cold water. It forms a vivid emerald blue solution quickly without precipitation or agglomeration, though it remains insoluble in organic solvents.
How stable is Direct Blue 199 under different pH levels?
The aqueous solution is highly stable in neutral and weakly alkaline environments. If it comes into contact with strong acids, it will experience a slight color change, but it returns to its original color upon dilution, showing strong process compatibility.
Which fibers are most suitable for dyeing with Direct Blue 199?
It has an excellent affinity for cellulose fibers including cotton, viscose, artificial cotton, non-woven fabrics, and linen, making it ideal for home textiles, towels, and decorative fabrics.
What is the sunlight fastness rating of Direct Blue 199?
Direct Blue 199 has outstanding sunlight resistance with a fastness rating of 6–7 grades, making it highly stable and resistant to fading in outdoor or direct sunlight environments.
What are the recommended temperature and pH settings during dyeing?
For optimal dyeing rates, uniformity, and fastness, a constant temperature of 95–100°C is recommended. The dyeing environment should be kept neutral to weakly alkaline.
How can I improve the wash and sweat fastness for dark products?
For dark-colored products, it is highly recommended to apply a dedicated fixing agent during the post-treatment stage to significantly enhance both water wash and sweat fastness.