Description

Acid Blue 290 is a synthetic organic dye belonging to the anthraquinone class, valued for its bright and stable blue coloration. This high-performance dye is engineered to deliver excellent fastness properties, including lightfastness and washfastness, making it a critical component in demanding applications. It is primarily utilized by manufacturers in the textile, leather, and specialty paper industries seeking consistent and vibrant dyeing results.

Application

• Textile Dyeing: Used for dyeing nylon, silk, wool, and other polyamide fibers to achieve brilliant blue shades with good levelness.
• Leather Finishing: Applied in the dyeing of leather goods, providing rich color and good penetration.
• Paper Coloration: Employed in the production of specialty papers, including decorative and security papers, where color consistency is key.
• Ink Manufacturing: Serves as a colorant in the formulation of inks for various printing applications.
• Biological Staining: May be used in histological stains for microscopy in laboratory settings.
• Plastics and Polymers: Can be incorporated for coloring certain types of plastics and synthetic materials.

Basic Information

Product Name	Acid Blue 290
CAS No.	39280-53-0
Molecular Formula	C32H26N4O8S2
Molecular Weight	666.70 g/mol
Synonyms	Acid Blue 290; C.I. 61205; Anthraquinone Blue 290; Acid Blue A; Telon Blue ANL; Nylosan Blue N-5GL; Acid Leather Blue 2G; 1-Amino-4-(3-((4-((2,5-dichlorophenyl)amino)-9,10-dioxo-9,10-dihydroanthracen-1-yl)amino)propylamino)anthraquinone-2-sulfonic acid
EINECS	Contact for details

Quality Control

Our Acid Blue 290 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous in-house specifications for critical parameters such as color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and conformance is provided with every shipment to support your quality assurance protocols.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
Shade	Matches Standard
Particle Size	≥ 95% passes 80 mesh

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