Description

3-Hydroxy-4-[[4'-[[1-Hydroxy-6-(Phenylamino)-3-Sulfo-2-Naphthalenyl]Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]-2,7-Naphthalenedisulfonic Acid Trisodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart specific color properties and is a critical building block in the synthesis of complex dyes and pigments. It is primarily sought after by manufacturers in the textile, ink, and specialty coatings industries for producing vivid and stable colors.

Application

• Primary Intermediate for Dye Synthesis: A key precursor in the manufacturing of high-performance azo dyes for textiles, leather, and paper.
• Ink Formulation: Used in the production of industrial and specialty printing inks, including those for packaging and security applications.
• Pigment Manufacturing: Serves as a crucial component in creating organic pigments with enhanced lightfastness and weather resistance for plastics and coatings.
• Research & Development: Employed in chemical R&D for developing new chromophores and studying structure-property relationships in color chemistry.
• Specialty Coatings: Utilized in formulations for coatings where specific color tones and chemical stability are required.

Basic Information

Item	Details
Product Name	3-Hydroxy-4-[[4'-[[1-Hydroxy-6-(Phenylamino)-3-Sulfo-2-Naphthalenyl]Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]-2,7-Naphthalenedisulfonic Acid Trisodium Salt
CAS No.	68084-25-3
Molecular Formula	C40H27N5Na3O14S3
Molecular Weight	974.81 g/mol
Synonyms	Trisodium 3-hydroxy-4-[(E)-2-[4-[(E)-2-[1-hydroxy-6-(phenylamino)-3-sulfonatonaphthalen-2-yl]diazenyl]-2-methoxyphenyl]-6-methoxyphenyl]diazenylnaphthalene-2,7-disulfonate; C.I. Direct Brown 1:1; Direct Brown 1:1; Direct Brown 1 (sodium salt); Azo dye intermediate 68084-25-3; 3-Hydroxy-4-[(E)-2-[4-[(E)-2-[1-hydroxy-6-(phenylamino)-3-sulfonatonaphthalen-2-yl]diazenyl]-2-methoxyphenyl]-6-methoxyphenyl]diazenylnaphthalene-2,7-disulfonic acid trisodium salt
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including HPLC and spectrophotometry to verify identity and composition. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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 (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)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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