Description

Disodium 4,4'-[(3,3'-Dimethoxy[1,1'-Biphenyl]-4,4'-Diyl)Bis[Iminocarbonyl(2-Hydroxy-4,1-Phenylene)Azo]]Bis(3-Hydroxynaphthalene-1-Sulphonate) is a high-purity, synthetic organic dye belonging to the class of azo compounds. This product is valued for its strong colorant properties and specific chemical reactivity, making it a critical intermediate in advanced manufacturing processes. It is primarily sought by industries requiring precise and stable colorants or specialized chemical building blocks for research and production.

Application

• Specialized Dye Intermediate: Used in the synthesis of high-performance dyes and pigments for textiles, inks, and coatings.
• Analytical Chemistry Reagent: Employed as a colorimetric indicator or a complexometric agent in laboratory analysis and diagnostic kits.
• Functional Material Synthesis: Serves as a key precursor in the development of organic semiconductors, photoconductive materials, or liquid crystal displays (LCDs).
• Biomedical Staining: Potential application in histological staining for microscopy due to its specific affinity.
• Research & Development: Utilized in chemical research for studying azo coupling reactions and developing novel chromophores.

Basic Information

Item	Detail
Product Name	Disodium 4,4'-[(3,3'-Dimethoxy[1,1'-Biphenyl]-4,4'-Diyl)Bis[Iminocarbonyl(2-Hydroxy-4,1-Phenylene)Azo]]Bis(3-Hydroxynaphthalene-1-Sulphonate)
CAS No.	70247-69-7
Molecular Formula	C52H34N6Na2O16S2
Molecular Weight	1084.94 g/mol
Synonyms	Direct Brown 1:2; C.I. 30045; 4,4'-[(3,3'-Dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis[iminocarbonyl(2-hydroxy-4,1-phenylene)azo]]bis(3-hydroxy-1-naphthalenesulfonic acid) disodium salt; Disodium 4,4'-[3,3'-dimethoxybiphenyl-4,4'-diylbis(iminocarbonyl-2-hydroxy-4,1-phenyleneazo)]di(3-hydroxynaphthalene-1-sulphonate); Azo dye CAS 70247-69-7; C.I. Direct Brown 1:2 (disodium salt)
EINECS	Contact for details

Quality Control

Our Disodium 4,4'-[(3,3'-Dimethoxy[1,1'-Biphenyl]-4,4'-Diyl)Bis[Iminocarbonyl(2-Hydroxy-4,1-Phenylene)Azo]]Bis(3-Hydroxynaphthalene-1-Sulphonate) is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay (HPLC), heavy metal content, and loss on drying is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Brown to dark 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
Solubility (1% in Water)	Complete, clear solution

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