Description

3,3'-[(1,1'-Biphenyl-4,4'-Diyl)Bis(Azo)]Bis[4-Hydroxy-1-Naphthalenesulfonic Acid Sodium] Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart vivid and stable coloration, making it a critical component in the synthesis of specialized dyes and pigments. It is primarily sought after by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of direct, acid, and reactive dyes for textiles, leather, and paper.
• Pigment Manufacturing: Used in the production of high-quality organic pigments for inks, coatings, and plastics.
• Biological Staining: Potential application as a staining agent in histology and microbiology due to its chromophoric properties.
• Analytical Chemistry: Can be utilized as a colorimetric indicator or reagent in specific analytical methods.
• Research & Development: Employed in chemical research for developing new chromophores and functional materials.

Basic Information

Product Name	3,3'-[(1,1'-Biphenyl-4,4'-Diyl)Bis(Azo)]Bis[4-Hydroxy-1-Naphthalenesulfonic Acid Sodium] Salt
CAS No.	6426-63-7
Molecular Formula	C32H20N4Na2O8S2
Molecular Weight	690.63 g/mol
Synonyms	Direct Blue 1; Pontamine Blue 3BX; C.I. 24410; Azo Blue 3B; Benzo Blue 3B; 4,4'-Bis[(4-hydroxy-1-naphthyl)azo]-1,1'-biphenyl-3,3'-disulfonic Acid Disodium Salt; 3,3'-[(1,1'-Biphenyl-4,4'-diyl)di(E)diazene-2,1-diyl]bis(4-hydroxynaphthalene-1-sulfonic Acid) Disodium Salt
EINECS	229-181-1

Quality Control

Our production of 3,3'-[(1,1'-Biphenyl-4,4'-Diyl)Bis(Azo)]Bis[4-Hydroxy-1-Naphthalenesulfonic Acid Sodium] Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. Certificates of Analysis (COA) detailing key specifications 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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to bluish-black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Water Solubility	Freely soluble

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