Description

3,3'-[1,1'-Biphenyl-4,4'-Diylbis(Azo)]Bis(6-Amino-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium) Salt is a high-purity, water-soluble diazo compound primarily used as a key intermediate in the synthesis of specialized dyes and pigments. This compound matters for its ability to impart specific color properties and chemical stability to the final product, which is critical for performance and longevity. It is needed by manufacturers in the textile, ink, and specialty chemical industries seeking to produce high-value, colorfast materials.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a crucial building block in the synthesis of high-performance, polyazo dyes for textiles, leather, and paper.
• Functional Dye Manufacturing: Used in the production of specialized dyes for inks, including those for digital printing and security applications.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo coupling reactions.
• Specialty Chemical Synthesis: Acts as an intermediate for creating complex molecules used in analytical chemistry and material science.

Basic Information

Product Name	3,3'-[1,1'-Biphenyl-4,4'-Diylbis(Azo)]Bis(6-Amino-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium) Salt
CAS No.	3626-23-1
Molecular Formula	C32H20N6O10S2Na2 or related sodium salt form
Molecular Weight	Contact for details
Synonyms	Direct Black 22 (Intermediate); 4,4'-Bis(6-amino-4-hydroxy-3-sulfo-2-naphthylazo)biphenyl Disodium Salt; C.I. 35435; Biphenyl-4,4'-diylbis(azo)bis(6-amino-4-hydroxynaphthalene-2-sulfonic acid) disodium salt; 3,3'-(Biphenyl-4,4'-diyldi-2,1-diazenediyl)bis(6-amino-4-hydroxynaphthalene-2-sulfonic acid) sodium salt; Azoic Diazo Component 48 (related); 6-Amino-4-hydroxy-3-[[4'-[2-(6-amino-4-hydroxy-3-sulphonato-2-naphthyl)diazenyl]biphenyl-4-yl]diazenyl]naphthalene-2-sulphonate
EINECS	Contact for details

Quality Control

Our production of 3,3'-[1,1'-Biphenyl-4,4'-Diylbis(Azo)]Bis(6-Amino-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium) Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, identity, and performance as a dye intermediate. Certificates of Analysis (COA) detailing key specifications such as assay, impurity profile, and solubility are available upon request 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (typical)
Solubility (Water)	Soluble
Loss on Drying	≤ 5.0%
Heavy Metals	≤ 20 ppm

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