Description

Benzenesulfonic Acid, 5-Amino-2-(Phenylamino)-, Diazotized, Coupled With 5,5'-[Oxybis[(5-Hydroxy-3,1-Phenylene)Oxy]]Bis[1,3-Benzenediol], Sodium Salts is a complex, high-purity synthetic dye intermediate and colorant. This compound is valued for its ability to impart a strong, stable color and is engineered for performance in demanding formulations. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries seeking consistent and reliable colorants for their products.

Application

• Textile Dyeing: As a key intermediate for producing high-quality, wash-fast dyes for synthetic and natural fibers.
• Ink Manufacturing: Used in the formulation of industrial and specialty printing inks, including inks for packaging and security applications.
• Pigment Production: Serves as a precursor or component in the synthesis of organic pigments for plastics and coatings.
• Specialty Coatings: Imparts color in advanced coating systems for automotive, industrial, and decorative finishes.
• Research & Development: Utilized in chemical research for developing new chromophores and functional dyes.
• Paper Coloring: Applied in the production of colored papers and paper products requiring specific hue stability.

Basic Information

Product Name	Benzenesulfonic Acid, 5-Amino-2-(Phenylamino)-, Diazotized, Coupled With 5,5'-[Oxybis[(5-Hydroxy-3,1-Phenylene)Oxy]]Bis[1,3-Benzenediol], Sodium Salts
CAS No.	97952-78-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Direct Black 166; Direct Black 166; Sodium 5-amino-2-(phenylamino)benzenesulfonate diazo component, coupled derivative; 5-Amino-2-(phenylamino)benzenesulfonic acid, diazotized, coupled with 5,5'-[oxybis[(5-hydroxy-3,1-phenylene)oxy]]bis[1,3-benzenediol], sodium salts; Diazotized 5-Amino-2-(Phenylamino)Benzenesulfonic Acid Coupled With 5,5'-[Oxybis[(5-Hydroxy-3,1-Phenylene)Oxy]]Bis[1,3-Benzenediol] Sodium Salts; Direct Black Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to rigorous quality testing protocols to ensure batch-to-batch consistency and compliance with industry specifications. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. Certificates of Analysis (COA) detailing purity, strength, and impurity profiles are available upon request to support your quality assurance processes.

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). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Ash Content	Contact for details
Heavy Metals	Contact for details

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