Description

Disperse Blue S-4G is a high-performance synthetic dye belonging to the anthraquinone class of disperse dyes. It is engineered to deliver excellent color fastness, brilliant shade, and superior dispersion stability in demanding industrial dyeing processes. This product is essential for manufacturers requiring consistent, high-quality coloration for synthetic fibers. Its primary applications are in the textile industry for dyeing polyester and its blends, as well as in specialized areas of plastics coloration.

Application

• Primary dyeing of polyester fibers and yarns.
• Dyeing of polyester-cotton and polyester-wool blended fabrics.
• Coloration of acetate and triacetate fibers.
• Mass pigmentation of plastics, particularly for technical applications.
• Transfer printing processes for synthetic textiles.
• Manufacture of colored masterbatches for synthetic polymers.

Basic Information

Product Name	Disperse Blue S-4G
CAS No.	83929-84-4
Molecular Formula	C20H17N3O5
Molecular Weight	379.37 g/mol
Synonyms	Disperse Blue S-4G; C.I. Disperse Blue 73; Disperse Blue 73; Blue S-4G; 1,4-Bis[(2,6-diethyl-4-methylphenyl)amino]anthraquinone; 1,4-Bis(mesitylamino)anthraquinone; Anthraquinone, 1,4-bis[(2,6-diethyl-4-methylphenyl)amino]-; Samaron Blue FBL
EINECS	Contact for details

Quality Control

Our Disperse Blue S-4G is manufactured under a strict quality management system to ensure batch-to-batch consistency and compliance with global industry standards. Every lot is tested for critical parameters including color strength, dispersion stability, and particle size distribution. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with each shipment to guarantee product integrity for your application.

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% (vs. Standard)
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Dispersion Stability	Passes Filter Test
Particle Size	> 95% below 5μm

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