Description

1-Naphthalenesulfonic Acid, 5-2,4-Diamino-5-(2-Hydroxy-5-Nitrophenyl)Azophenylazo- is a specialized azo dye intermediate characterized by its complex, multi-functional aromatic structure. This compound matters for its role as a precise colorant precursor, enabling the synthesis of high-performance dyes and pigments with specific hue and stability properties. It is primarily needed by manufacturers in the textile, ink, and specialty chemical industries for producing advanced coloring agents.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of complex, high-value azo dyes for textiles and fabrics.
• Specialty Ink Manufacturing: Used in the production of pigments for industrial inks, including those for packaging and security printing.
• Research & Development: Serves as a crucial reagent in chemical R&D for developing new chromophores and functional dyes.
• Analytical Chemistry: May be employed as a staining agent or indicator in specific analytical methodologies.
• Functional Material Synthesis: Potential use in creating dyes for non-textile applications such as lasers or optical sensors.

Basic Information

Product Name	1-Naphthalenesulfonic Acid, 5-2,4-Diamino-5-(2-Hydroxy-5-Nitrophenyl)Azophenylazo-
CAS No.	25747-14-2
Molecular Formula	C28H20N8O6S
Molecular Weight	596.57 g/mol
Synonyms	Acid Black 209; C.I. 28440; 1-Naphthalenesulfonic acid, 5-[(2,4-diamino-5-[(2-hydroxy-5-nitrophenyl)azo]phenyl)azo]-; 5-[(2,4-Diamino-5-[(2-hydroxy-5-nitrophenyl)azo]phenyl)azo]-1-naphthalenesulfonic acid; Azo dye intermediate 25747-14-2; Black 209 (Acid); C.I. Acid Black 209
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and purity. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of 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%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents	Meets ICH guidelines

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