Description

7-Benzothiazolesulfonic acid, 2,2'-[(2-sulfo-1,4-phenylene) bis[imino(1-acetyl-2-oxo-2,1-ethanediyl)azo-4 ,1-phenylene]]bis[6-methyl-, compd. with α,α',α''- (nitrilotri-2,1-ethanediyl)tris[ω-hydroxypoly (oxy-1,2-ethanediyl)] (1:3) is a high-performance, water-soluble anionic dye complex designed for demanding technical applications. Its molecular structure, featuring benzothiazole and azo chromophores complexed with a nonionic surfactant, provides exceptional color strength, stability, and compatibility in aqueous systems. This product is essential for industries requiring precise and durable coloration, particularly in specialized manufacturing processes. It is supplied as a hygroscopic solid and must be handled with appropriate care to maintain its performance characteristics.

Application

• Specialized Textile Dyeing: Primarily used for dyeing polyamide (nylon) fibers, offering excellent wash and light fastness.
• Leather Coloration: Provides vibrant and uniform dyeing for various types of leather goods.
• Inkjet Inks: Serves as a key colorant in the formulation of high-quality industrial and specialty inkjet inks.
• Paper Dyeing: Used for the surface coloring and tinting of paper products.
• Biological Staining: Potential application as a specialized stain in histological or microbiological research.
• Functional Dyes: Suitable for research into dye-sensitized solar cells (DSSCs) or other optoelectronic applications due to its complex structure.

Basic Information

Product Name	7-Benzothiazolesulfonic acid, 2,2'-[(2-sulfo-1,4-phenylene) bis[imino(1-acetyl-2-oxo-2,1-ethanediyl)azo-4 ,1-phenylene]]bis[6-methyl-, compd. with α,α',α''- (nitrilotri-2,1-ethanediyl)tris[ω-hydroxypoly (oxy-1,2-ethanediyl)] (1:3)
CAS No.	73018-91-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Acid Blue 277; Acid Blue 277; Lanasyn Blue S-RL; Suracid Blue E-RL; Acid Dye Blue 277; 2,2'-[(2-Sulfo-1,4-phenylene)bis[imino(1-acetyl-2-oxo-2,1-ethanediyl)azo-4,1-phenylene]]bis[6-methyl-7-benzothiazolesulfonic acid] compound with α,α',α''-(nitrilotri-2,1-ethanediyl)tris[ω-hydroxypoly(oxy-1,2-ethanediyl)] (1:3); Blue 277 acid dye
EINECS	Contact for details

Quality Control

Our 7-Benzothiazolesulfonic acid dye complex is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent color value, strength, and purity. Key parameters such as shade, solubility, and impurity profile are verified against stringent internal specifications. A Certificate of Analysis (COA) detailing these results is provided with each shipment to guarantee traceability and compliance with your technical requirements.

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 after opening to prevent moisture absorption, which can affect product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to standard
Color Strength	100% ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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