Acid Blue 9 is a classic water-soluble anthraquinone acid dye, classified as an anionic acidic colorant. It appears as a bright royal blue powder or crystal with a pure and vivid hue. Featuring good water solubility and uniform dye uptake, it is mainly used for protein fibers, polyamide fibers, leather, paper, printing inks and some aqueous coloring systems. Different from high-temperature inorganic ceramic pigments, it cannot withstand extreme high temperatures and is mainly designed for medium-to-low temperature dyeing applications. With high tinting strength and brilliant color, it is a commonly used blue dye in industrial dyeing and water-based coloring fields, meeting the coloring needs of various light industrial products.

Basic Information

Model: Acid Blue 9 (C.I. Acid Blue 9, general industrial standard grade with no additional numerical suffix)

Category: Water-soluble anthraquinone acid dye (anionic acidic colorant, not a high-temperature inorganic ceramic pigment)

Core Composition: Anthraquinone sulfonate compound, pure organic acid dye system

Appearance: Uniform royal blue powder / crystalline powder, free of agglomeration and visible impurities, readily soluble in water

Note: Water-soluble organic acid dye, not suitable for high-temperature ceramic firing. It differs greatly from inorganic high-temperature pigments such as cobalt blue, vanadium-zirconium blue and peacock blue in temperature resistance, application scenarios and solubility. Mixing use is strictly prohibited.

Core Technical Parameters

Core Product Features

Pure and Bright Hue: Provides high-saturation royal blue with uniform and authentic color, free of impurities or off-tints. Colored products feature bright and transparent color with outstanding visual effect, superior to ordinary blue dyes with high-grade coloring texture.

Excellent Water Solubility: Dissolves rapidly in cold water; aqueous solution is clear and transparent without sediment, dross or stratification. No additional cosolvent is required during dyeing, simplifying operation and suitable for industrial batch dyeing.

Uniform and Stable Dyeing: Strong affinity for protein fibers and polyamide fibers with moderate dyeing speed, allowing precise control of color depth. Dyed products show no color difference, streaking or spots, with high batch consistency ideal for mass production.

Strong Application Compatibility: Can be used alone for pure blue dyeing or blended with other acid dyes such as Acid Red and Acid Yellow to create rich blue shades including lake blue, navy blue and blue-purple, satisfying customized coloring needs for various products.

Eco-Friendly, Low-Toxicity and Safe: Environmentally friendly organic formula free of prohibited hazardous substances, no irritating odor. No heavy metal pollution during production and application. Complies with global environmental and safety standards for light industrial products with no hidden risks.

IV. Main Application Areas

Textile Printing & Dyeing: Dyeing of protein and polyamide fiber fabrics such as wool, silk, nylon and chinlon, applicable to underwear, fabrics, scarves and plush products with uniform dyeing and moderate color fastness.

Leather Processing: Dyeing and finishing of genuine leather and artificial leather for leather shoes, bags and accessories, offering bright color, strong adhesion and improved appearance texture.

Paper & Paper Products: Dyeing of decorative paper, art paper, packaging paper and card paper to produce blue-toned paper products with uniform color, no penetration or bleeding.

Water-Based Inks & Coatings: Formulation of water-based inks, water-based color pastes, stationery inks and watercolor paints for pens, watercolors and children’s graffiti pigments with good solubility and vivid color.

Other Light Industrial Fields: Coloring of soap, detergent and cosmetic auxiliary materials, as well as medium-to-low temperature coloring of some plastic and bamboo-wood products. Strictly forbidden for high-temperature firing of ceramics and enamel.

Usage & Storage Instructions

During use, first fully dissolve the product in warm water under stirring, filter and add to the dyeing system to ensure uniform dispersion and avoid color spots or patches.

Dyeing is recommended in acidic to neutral environment with temperature controlled ≤100℃. Avoid strong alkaline environment and ultra-high temperature operation to prevent dye decomposition and discoloration.

Adjust dosage flexibly according to target color depth. Conduct preliminary testing before dyeing to verify qualified hue and color fastness before mass production.

Application