Description

4-Hydroxy-6-[[3-[(2-Hydroxy-3-Nitro-5-Sodiosulfophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]-3-[(4-Nitrophenyl)Azo]Naphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, multi-azo dye intermediate essential for producing vibrant and stable colorants. This compound is valued for its ability to impart strong, lightfast hues, particularly in the orange to red spectrum, making it a critical component for manufacturers requiring precise color performance. It is primarily utilized by industrial-scale producers of dyes and pigments for textiles, inks, and specialty coatings.

Application

• Primary Dye Intermediate: Key precursor in the synthesis of high-performance azo dyes for textile fibers, including cotton, wool, and nylon.
• Pigment Manufacturing: Used in the production of organic pigments for printing inks, providing excellent color strength and stability.
• Industrial Coatings: Imparts durable coloration to industrial paints and coatings for plastics and metals.
• Specialty Colorants: Employed in the formulation of colorants for leather, paper, and other specialty materials.
• Research & Development: Serves as a standard or starting material in chemical R&D for novel dye and chromophore synthesis.

Basic Information

Item	Details
Product Name	4-Hydroxy-6-[[3-[(2-Hydroxy-3-Nitro-5-Sodiosulfophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]-3-[(4-Nitrophenyl)Azo]Naphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	6487-05-4
Molecular Formula	C28H15N7Na2O13S2
Molecular Weight	807.57 g/mol
Synonyms	Acid Orange 61; C.I. 18965; 4-Hydroxy-6-{[3-[(2-hydroxy-3-nitro-5-sulfophenyl)azo]-2,4-dihydroxyphenyl]azo}-3-[(4-nitrophenyl)azo]naphthalene-2-sulfonic acid disodium salt; 2-Naphthalenesulfonic acid, 4-hydroxy-6-[[3-[(2-hydroxy-3-nitro-5-sulfophenyl)azo]-2,4-dihydroxyphenyl]azo]-3-[(4-nitrophenyl)azo]-, sodium salt (1:2); Disodium 4-hydroxy-6-{[3-[(2-hydroxy-3-nitro-5-sulfophenyl)azo]-2,4-dihydroxyphenyl]azo}-3-[(4-nitrophenyl)azo]naphthalene-2-sulfonate; Azo dye intermediate 6487-05-4
EINECS	Contact for details

Quality Control

Our production of 4-Hydroxy-6-[[3-[(2-Hydroxy-3-Nitro-5-Sodiosulfophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]-3-[(4-Nitrophenyl)Azo]Naphthalene-2-Sulfonic Acid Sodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and spectrophotometry for color value, to ensure consistent performance and batch-to-batch reliability. Certificates of Analysis (COA) detailing all specifications are provided and available upon request.

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 material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange 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
Solubility (in Water)	Freely Soluble

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