Description

Disodium 5-[[2,4-Dihydroxy-3-[(2-Hydroxy-5-Nitrophenyl)Azo]-5-[(4-Nitrophenyl)Azo]Phenyl]Azo]-4-Hydroxy-3-[(4-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonate is a high-purity, multi-azo dye intermediate known for its complex molecular structure and specific chromophoric properties. This compound matters for its ability to impart intense and stable color characteristics in advanced material formulations. It is primarily needed by manufacturers in the specialty dyes and pigments, advanced material science, and research and development sectors seeking precise colorants for technical applications.

Application

• Key intermediate for the synthesis of high-performance azo dyes and pigments.
• Used in the coloration of specialized polymers, plastics, and synthetic fibers requiring specific lightfastness.
• Potential application in the formulation of functional dyes for non-textile uses, such as in optical filters or sensors.
• Employed in research and development laboratories for studying structure-property relationships in chromophores.
• Used in the production of colorants for inks and coatings where specific spectral properties are required.
• Serves as a reference standard or analytical reagent in quality control laboratories for dye analysis.

Basic Information

Product Name	Disodium 5-[[2,4-Dihydroxy-3-[(2-Hydroxy-5-Nitrophenyl)Azo]-5-[(4-Nitrophenyl)Azo]Phenyl]Azo]-4-Hydroxy-3-[(4-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonate
CAS No.	67786-23-6
Molecular Formula	C40H22N10Na2O17S2
Molecular Weight	1048.82 g/mol
Synonyms	Acid Black 210; C.I. 300310; Disodium 5-[[2,4-dihydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]-5-[(4-nitrophenyl)azo]phenyl]azo]-4-hydroxy-3-[(4-nitrophenyl)azo]naphthalene-2,7-disulfonate; 5-[[2,4-Dihydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]-5-[(4-nitrophenyl)azo]phenyl]azo]-4-hydroxy-3-[(4-nitrophenyl)azo]-2,7-naphthalenedisulfonic acid disodium salt; C.I. Acid Black 210; Azo Black 210; Multi-azo dye intermediate 67786-23-6
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Every batch is controlled via modern analytical techniques to guarantee identity, purity, and consistency. Certificates of Analysis (COA) detailing key specifications are available upon request to support your quality assurance protocols.

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 to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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