Description

Kayarus Supra Blue 4G is a high-performance synthetic dye belonging to the anthraquinone class, identified by CAS No. 90249-26-6. It is engineered to deliver exceptional color strength, brightness, and fastness properties, making it a critical component for achieving vibrant and durable coloration. This product is essential for manufacturers in the textile, leather, and specialty coatings industries who require reliable and consistent blue pigments for their high-quality finished goods.

Application

• Textile Dyeing: Primary application for dyeing polyester (PES), polyamide (nylon), and their blends, offering excellent wash and light fastness.
• Leather Finishing: Used for coloring finished leather goods, providing rich, uniform shades with good rub fastness.
• Plastics and Masterbatch Coloring: Imparts stable blue coloration to various polymers during manufacturing.
• Inkjet Inks: Suitable for the formulation of industrial and specialty inks requiring high color purity.
• Paper Dyeing: Employed for tinting specialty papers and paper products.
• Automotive Interiors: Used in coloring synthetic fibers and fabrics for car seats and interior trim.

Basic Information

Product Name	Kayarus Supra Blue 4G
CAS No.	90249-26-6
Molecular Formula	C20H16N2O5S2
Molecular Weight	428.48 g/mol
Synonyms	Disperse Blue 284; C.I. Disperse Blue 284; 1,4-Bis[(2,6-diethyl-4-methylphenyl)amino]anthraquinone; Kayalon Polyester Blue E-4G; Foron Blue E-4G; Dianix Blue E-4G; Terasil Blue 4G
EINECS	Contact for details

Quality Control

Every batch of Kayarus Supra Blue 4G is manufactured and tested under a stringent quality management system. We ensure compliance with industry standards for disperse dyes, with key parameters including color strength, shade, particle size distribution, and fastness properties rigorously verified. A Certificate of Analysis (COA) detailing purity, physical properties, and performance tests is provided with each shipment to guarantee batch-to-batch consistency and reliability for your production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Particle Size (≤ 5μm)	≥ 85%
Dispersion Stability	Grade A

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