Description

1,3-Naphthalenedisulfonic Acid, 7-3-4-(2-Hydroxy-1-Naphthalenyl)Azophenylazophenylsulfonylamino-, Potassium Sodium Salt is a high-purity, water-soluble azo dye intermediate and functional chemical. This compound is valued for its ability to impart color and specific functional properties in advanced material formulations. It is primarily required by manufacturers in the dyes and pigments, specialty coatings, and advanced polymer industries seeking consistent performance and batch-to-batch reliability.

Application

• Primary Intermediate for Azo Dyes and Pigments: Serves as a key building block in the synthesis of high-performance, complex azo colorants for textiles, inks, and plastics.
• Functional Additive in Specialty Coatings: Used to develop coatings with specific optical, UV-absorbing, or corrosion-inhibiting properties.
• Colorant for Advanced Polymers and Engineering Plastics: Imparts stable coloration to high-temperature and high-performance polymer matrices.
• Research & Development Chemical: Employed in academic and industrial R&D for developing new chromophores and functional materials.
• Analytical Reagent and Staining Agent: Potential use in laboratory settings for staining or as a standard in chromatographic analysis.

Basic Information

Item	Details
Product Name	1,3-Naphthalenedisulfonic Acid, 7-3-4-(2-Hydroxy-1-Naphthalenyl)Azophenylazophenylsulfonylamino-, Potassium Sodium Salt
CAS No.	141880-36-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Potassium Sodium Salt of 1,3-Naphthalenedisulfonic Acid, 7-[[4-[(2-Hydroxy-1-naphthalenyl)azo]phenyl]azo]phenylsulfonylamino-; C.I. Acid Black 210; Acid Black 210; Azo Black Dye Intermediate; 7-[[4-[(2-Hydroxy-1-naphthyl)azo]phenyl]azo]phenylsulfonylamino-1,3-naphthalenedisulfonic acid potassium sodium salt; Black 210; [4-[(2-Hydroxynaphthalen-1-yl)diazenyl]phenyl]diazenyl]phenyl]sulfonylamino]naphthalene-1,3-disulfonate
EINECS	Contact for details

Quality Control

Our production of 1,3-Naphthalenedisulfonic Acid, 7-3-4-(2-Hydroxy-1-Naphthalenyl)Azophenylazophenylsulfonylamino-, Potassium Sodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity, consistent chromatic strength, and compliance with agreed specifications. Comprehensive Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available upon request 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 nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 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.