Description

Acid Blue 25 is a synthetic anthraquinone acid dye known for its bright blue hue and good lightfastness. It is valued for its ability to produce vibrant and durable coloration on protein fibers like wool, silk, and nylon. This dye is essential for manufacturers in the textile, leather, and paper industries seeking consistent, high-quality blue shades. Its chemical stability and compatibility with various dyeing processes make it a reliable choice for industrial applications.

Application

• Primary dyeing and printing of wool, silk, and other protein-based textiles.
• Coloration of nylon fibers in the production of carpets, apparel, and technical fabrics.
• Leather dyeing for footwear, garments, and upholstery.
• Paper staining and tinting for specialty papers and decorative applications.
• Ink formulation for certain types of inks requiring a stable blue colorant.
• Biological staining in microscopy and histology (specific purified grades).

Basic Information

Product Name	Acid Blue 25
CAS No.	6408-78-2
Molecular Formula	C20H13N2NaO5S
Molecular Weight	416.38 g/mol
Synonyms	Acid Blue 25; C.I. 62055; Sodium 1-amino-4-(cyclohexylamino)-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate; Acid Blue AS; Anthraquinone Blue; Lissamine Blue; Acid Leather Blue A; C.I. Acid Blue 25; Acid Blue A; Wool Blue AS
EINECS	229-068-1

Quality Control

Our Acid Blue 25 is produced under a strict quality management system. Each batch undergoes comprehensive testing for key parameters including color strength, shade, solubility, and impurity profile to ensure batch-to-batch consistency and compliance with industry standards. A detailed Certificate of Analysis (COA) documenting purity, physical properties, and performance characteristics is available for every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Solubility in Water	Conforms
pH (1% Solution)	6.0 - 8.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.