Description

Disodium 6-Amino-3-[[4'-[(6-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its primary value lies in its role as a key precursor for synthesizing high-performance, colorfast dyes and pigments, particularly in the textile and leather industries. This compound is essential for manufacturers requiring consistent and reliable raw materials to produce vibrant, durable colors for technical applications.

Application

• Primary Intermediate for Dye Synthesis: A crucial building block for manufacturing a range of azo dyes, including direct, acid, and reactive dyes.
• Textile Dyeing and Printing: Used in the production of dyes for coloring natural and synthetic fibers such as cotton, wool, and nylon, offering good wash and light fastness.
• Leather Coloring: Serves as an intermediate for dyes applied in the leather tanning and finishing industry.
• Paper and Pulp Coloring: Employed in the manufacture of dyes for specialty paper products.
• Ink Formulation: A component in the synthesis of pigments for certain industrial inks.
• Research & Development: Used in chemical research for developing new chromophores and studying azo coupling reactions.

Basic Information

Product Name	Disodium 6-Amino-3-[[4'-[(6-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	66214-52-6
Molecular Formula	C40H30N6Na2O10S2
Molecular Weight	888.80 g/mol
Synonyms	Disodium 6-Amino-4-hydroxy-3-[[4'-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-2-sulphonate; C.I. Direct Red 254 (Intermediate); Azo Dye Intermediate 66214-52-6; 6-Amino-4-hydroxy-3-[[4'-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-3,3'-dimethylbiphenyl-4-yl]azo]naphthalene-2-sulphonic acid disodium salt; Direct Red 254 precursor; Tetrasodium 6,6'-(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diylbis(azo))bis(1-amino-2-hydroxy-3,6-naphthalenedisulphonate) (related form)
EINECS	Contact for details

Quality Control

Our production of Disodium 6-Amino-3-[[4'-[(6-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxynaphthalene-2-Sulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye intermediate applications. Certificates of Analysis (COA) detailing batch-specific results are provided to guarantee traceability and consistency for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95.0%
Water Content	Max. 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
Related Substances (HPLC)	Total impurities: Max. 5.0%

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