Description

6-[(4-Amino-6-Sulfo-1-Naphthalenyl)Azo]-1-Naphthalenesulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a critical precursor for synthesizing specialized dyes and pigments, particularly those requiring high color strength and stability. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vivid and durable colorants.

Application

• Primary intermediate for the synthesis of acid dyes and direct dyes used in textile coloration, especially for nylon, wool, and silk.
• Key building block in the production of pigments and lakes for inks, coatings, and plastics.
• Used in the manufacture of biological stains and histological dyes for laboratory and diagnostic applications.
• Potential precursor for functional dyes used in sensitizers, optical media, and other high-tech applications.
• Intermediate in research and development of novel azo-based compounds for various chemical and material science fields.

Basic Information

Product Name	6-[(4-Amino-6-Sulfo-1-Naphthalenyl)Azo]-1-Naphthalenesulfonic Acid Disodium Salt
CAS No.	107471-52-3
Molecular Formula	C₂₀H₁₂N₄Na₂O₇S₂
Molecular Weight	534.43 g/mol
Synonyms	Acid Red 337; C.I. 17210; 1-Naphthalenesulfonic acid, 6-[(4-amino-6-sulfo-1-naphthalenyl)azo]-, disodium salt; Disodium 6-[(4-amino-6-sulfo-1-naphthyl)azo]naphthalene-1-sulphonate; 6-[(4-Amino-6-sulfo-1-naphthyl)azo]-1-naphthalenesulfonic acid disodium salt; Azo dye intermediate 107471-52-3
EINECS	Contact for details

Quality Control

Our production of 6-[(4-Amino-6-Sulfo-1-Naphthalenyl)Azo]-1-Naphthalenesulfonic Acid Disodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and compliance.

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); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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