Description

4-[[2-Amino-4-Hydroxy-5-[(2-Hydroxy-3,5-Dinitrophenyl)Azo]-3-[(4-Nitrophenyl)Azo]Phenyl]Azo]-5-Hydroxynaphthalene-2,7-Disulphonic Acid is a high-purity, polyazo dye intermediate known for its complex molecular structure and vibrant color properties. This compound is critical for synthesizing specialized dyes and pigments that require excellent lightfastness and thermal stability. It is primarily sought after by manufacturers in the textile, ink, and specialty coatings industries for producing high-performance colorants.

Application

• Textile Dyeing: A key intermediate for producing high-grade, wash-fast azo dyes for synthetic and natural fibers.
• Ink Formulation: Used in the synthesis of pigments for industrial printing inks, including packaging and security inks.
• Specialty Coatings: Serves as a precursor for colorants in high-performance paints and polymer coatings.
• Research & Development: Employed in chemical research for developing novel chromophores and studying azo dye chemistry.
• Analytical Reagents: Potential use as a staining agent or indicator in specific analytical chemistry applications.

Basic Information

Product Name	4-[[2-Amino-4-Hydroxy-5-[(2-Hydroxy-3,5-Dinitrophenyl)Azo]-3-[(4-Nitrophenyl)Azo]Phenyl]Azo]-5-Hydroxynaphthalene-2,7-Disulphonic Acid
CAS No.	70660-46-7
Molecular Formula	C28H18N10O15S2
Molecular Weight	798.62 g/mol
Synonyms	Acid Black 210; C.I. 300310; 5-Hydroxy-6-[[2-hydroxy-5-[(2-hydroxy-3,5-dinitrophenyl)azo]-4-[(4-nitrophenyl)azo]phenyl]azo]-1,3-naphthalenedisulfonic acid; 1,3-Naphthalenedisulfonic acid, 5-hydroxy-6-[[2-hydroxy-5-[(2-hydroxy-3,5-dinitrophenyl)azo]-4-[(4-nitrophenyl)azo]phenyl]azo]-; Polyazo dye intermediate CAS 70660-46-7
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Every lot is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm

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