Description

Trisodium 5-Amino-3-[[4-[[4-[(2-Amino-8-Hydroxy-6-Sulphonato-1-Naphthyl)Azo]Benzoyl]Amino]Phenyl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. It matters as a critical precursor for synthesizing high-performance dyes and pigments, offering excellent color strength and stability in demanding applications. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking reliable and consistent raw materials for their production processes.

Application

• Primary intermediate for the synthesis of reactive dyes and acid dyes used in textile coloring, particularly for wool, silk, and nylon.
• Key building block in the production of high-grade pigments for industrial inks, including those used in packaging and printing.
• Used in the manufacture of specialty dyes for leather and paper products.
• Potential component in the synthesis of functional dyes for non-textile applications, such as in optical materials or sensors.
• Acts as a chromophore precursor in research and development of new coloring agents with specific light-fastness and wash-fastness properties.

Basic Information

Product Name	Trisodium 5-Amino-3-[[4-[[4-[(2-Amino-8-Hydroxy-6-Sulphonato-1-Naphthyl)Azo]Benzoyl]Amino]Phenyl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonate
CAS No.	85721-13-7
Molecular Formula	C39H24N7Na3O14S4
Molecular Weight	1067.9 g/mol
Synonyms	Acid Black 210; C.I. 300310; Trisodium 5-amino-3-[[4-[[4-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo]benzoyl]amino]phenyl]azo]-4-hydroxynaphthalene-2,7-disulphonate; 5-Amino-3-[[4-[[4-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo]benzoyl]amino]phenyl]azo]-4-hydroxynaphthalene-2,7-disulphonic acid trisodium salt; Reactive Black 5 precursor; Azo dye intermediate 85721-13-7
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Every lot is analyzed using advanced techniques like HPLC to confirm identity and assay, ensuring it meets the exacting standards required for sensitive synthesis processes. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment.

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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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