Description

5-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]-8-[[4-(Phenylazo)-7-Sulpho-1-Naphthyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt is a high-purity, complex azo dye intermediate essential for producing vibrant and durable colorants. This compound is valued for its ability to impart strong, stable hues and its role as a key building block in advanced synthetic chemistry. It is primarily required by manufacturers in the textile dyeing, specialty ink, and high-performance pigment industries seeking consistent quality and reliable supply chains for their formulations.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical precursor in the synthesis of high-grade, complex azo dyes for textiles and fabrics.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics requiring specific color fastness and stability.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo coupling reactions.
• Analytical Chemistry: Can be utilized as a standard or reagent in colorimetric analysis and other laboratory procedures.
• Functional Material Synthesis: Potential use in creating advanced materials where specific light-absorbing properties are needed.

Basic Information

Product Name	5-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]-8-[[4-(Phenylazo)-7-Sulpho-1-Naphthyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt
CAS No.	85283-63-2
Molecular Formula	C36H22N6O10S3 • xNa
Molecular Weight	Contact for details
Synonyms	Sodium 5-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-8-[[4-(phenylazo)-7-sulfo-1-naphthyl]azo]naphthalene-2-sulfonate; C.I. Direct Brown 1:1; Direct Brown 1:1; 5-[(7-Amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-8-[[4-(phenylazo)-7-sulfo-1-naphthyl]azo]naphthalene-2-sulfonic acid sodium salt; Azo dye intermediate 85283-63-2; Trisazo dye intermediate; Complex azo compound sodium salt
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Each lot undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color value, and elemental analysis. A detailed Certificate of Analysis (COA) documenting identity, purity, 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95% (Typical 97-99%)
Loss on Drying	≤ 5.0 %
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (Water)	Soluble, clear solution

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