Description

4-Amino-5-Hydroxy-6-[[2-Methyl-5-[(Phenylamino)Sulphonyl]Phenyl]Azo]-3-[(4-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonic Acid is a high-purity, complex azo dye intermediate of significant industrial importance. Its precise molecular structure enables the synthesis of specialized dyes and pigments with targeted color properties and stability. This compound is essential for manufacturers in the colorant industry seeking to develop advanced products for textiles, inks, and other high-performance applications.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a critical building block in the synthesis of high-value, complex azo colorants.
• Textile Dye Manufacturing: Used to produce specialized dyes for synthetic and natural fibers requiring specific shades and fastness properties.
• Industrial Ink Formulation: A key precursor for pigments used in printing inks, including packaging and security inks.
• Functional Dye Synthesis: Potential intermediate for dyes used in non-textile applications, such as in optical data storage or liquid crystal displays (LCDs).
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Specialty Chemical Production: Used in the manufacture of other fine chemicals and complex organic molecules requiring a specific azo linkage architecture.

Basic Information

Product Name	4-Amino-5-Hydroxy-6-[[2-Methyl-5-[(Phenylamino)Sulphonyl]Phenyl]Azo]-3-[(4-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonic Acid
CAS No.	85750-18-1
Molecular Formula	C29H22N8O11S3
Molecular Weight	754.72 g/mol
Synonyms	Acid Black 210; C.I. 300310; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-6-[[2-methyl-5-[(phenylamino)sulfonyl]phenyl]azo]-3-[(4-nitrophenyl)azo]-; 4-Amino-5-hydroxy-6-{[2-methyl-5-(phenylsulfamoyl)phenyl]diazenyl}-3-[(4-nitrophenyl)diazenyl]naphthalene-2,7-disulfonic acid; Azo dye intermediate 85750-18-1; Black 210 (Acid)
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity. The material is characterized using advanced analytical techniques including HPLC, UV-Vis, and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and R&D 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 degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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