Description

Disodium 5-[[2,4-Dihydroxy-3-[(4-Nitrophenyl)Azo]Phenyl]Azo]-4-Hydroxy-3-[(2-Hydroxy-5-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonate is a high-purity, synthetic azo dye intermediate of significant industrial importance. This compound is valued for its precise chemical structure, which is critical for producing consistent and vibrant colorants. It is primarily utilized by manufacturers in the dyes and pigments industry for creating specialized colorants used in inks, coatings, and other advanced materials.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance, complex azo dyes.
• Specialty Pigments: Used in the formulation of pigments for industrial coatings, automotive paints, and plastics requiring specific color fastness and stability.
• Ink Manufacturing: A critical component in producing high-quality printing inks, including those for packaging and security printing applications.
• Textile Dyeing: Employed in the creation of dyes for synthetic fibers, offering deep shades and good wash-fastness properties.
• Research & Development: Used in chemical R&D laboratories for developing new colorant molecules and studying azo chemistry.
• Functional Materials: Potential applications in the development of materials for optical sensors or light-absorbing layers due to its specific chromophore structure.

Basic Information

Product Name	Disodium 5-[[2,4-Dihydroxy-3-[(4-Nitrophenyl)Azo]Phenyl]Azo]-4-Hydroxy-3-[(2-Hydroxy-5-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonate
CAS No.	85959-21-3
Molecular Formula	C34H20N8Na2O16S2
Molecular Weight	906.73 g/mol
Synonyms	Acid Black 210; C.I. 300310; Disodium 5-((2,4-dihydroxy-3-((4-nitrophenyl)azo)phenyl)azo)-4-hydroxy-3-((2-hydroxy-5-nitrophenyl)azo)naphthalene-2,7-disulfonate; 5-[[2,4-Dihydroxy-3-[(4-nitrophenyl)azo]phenyl]azo]-4-hydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]naphthalene-2,7-disulfonic acid disodium salt; Azo Black Dye Intermediate; Bis(azo) Naphthalene Disulfonate Dye
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Every lot is subjected to rigorous analytical testing, including HPLC for purity and identity confirmation. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment 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). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark brown to black 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 (in Water)	Passes test

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