Description

8-[(4-Amino-3-Methoxyphenyl)Azo]-6-Ethoxy-5-[(2-Hydroxy-6-Sulfo-1-Naphtyl)Azo]-2-Naphthalenesulfonic Acid Disodium Salt is a high-purity, disazo-based dye intermediate of significant commercial importance. Its complex molecular structure provides excellent chromophoric properties, making it a critical precursor for synthesizing specialized dyes and pigments. This compound is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, stable colors.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of high-performance disazo dyes for textiles, leather, and paper.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, including packaging and security inks, due to its color strength.
• Functional Dye Synthesis: Serves as a precursor for dyes used in non-textile applications, such as colorants for plastics and polymers.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying structure-color relationships.
• Analytical Chemistry: Can be employed as a staining agent or a complexometric indicator in specific laboratory methodologies.

Basic Information

Product Name	8-[(4-Amino-3-Methoxyphenyl)Azo]-6-Ethoxy-5-[(2-Hydroxy-6-Sulfo-1-Naphtyl)Azo]-2-Naphthalenesulfonic Acid Disodium Salt
CAS No.	6226-70-6
Molecular Formula	C35H28N6Na2O10S2
Molecular Weight	810.73 g/mol
Synonyms	Acid Red 359; C.I. 18215; Disodium 8-[(4-amino-3-methoxyphenyl)azo]-6-ethoxy-5-[(2-hydroxy-6-sulfo-1-naphthyl)azo]-2-naphthalenesulfonate; 5-[(2-Hydroxy-6-sulfo-1-naphthalenyl)azo]-8-[(4-amino-3-methoxyphenyl)azo]-6-ethoxy-2-naphthalenesulfonic acid disodium salt; Azo dye intermediate 6226-70-6; C.I. Acid Red 359; Disazo dye intermediate
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. The material is characterized using advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
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.