Description

Dipotassium 6-Amino-5-[[5-[(3-Chlorobenzoyl)Amino]-2-Sulphonatophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its value lies in its role as a key precursor for synthesizing vibrant and stable dyes and pigments, particularly in applications requiring specific color fastness and chemical compatibility. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of acid dyes, direct dyes, and reactive dyes used for coloring nylon, silk, wool, and paper.
• Textile Industry: Used in the production of dyes for textile fibers, offering good solubility and coupling properties to achieve specific shades.
• Ink Manufacturing: Employed in the formulation of specialty inks, including those for ink-jet printing and packaging, where color consistency and stability are paramount.
• Pigment Synthesis: Acts as a precursor for lake pigments and other insoluble colorants used in plastics, coatings, and masterbatches.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo dye chemistry and photophysical properties.
• Biological Staining: Potential use in the development of histological stains and indicators in analytical chemistry due to its azo chromophore structure.

Basic Information

Product Name	Dipotassium 6-Amino-5-[[5-[(3-Chlorobenzoyl)Amino]-2-Sulphonatophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	67875-06-3
Molecular Formula	C23H15ClK2N4O9S2
Molecular Weight	677.28 g/mol
Synonyms	6-Amino-5-[[5-[(3-chlorobenzoyl)amino]-2-sulfophenyl]azo]-4-hydroxy-2-naphthalenesulfonic acid, dipotassium salt; C.I. Acid Yellow 219; Dipotassium 6-amino-4-hydroxy-5-[(2-sulfo-5-[(3-chlorobenzoyl)amino]phenyl)azo]-2-naphthalenesulfonate; 2-Naphthalenesulfonic acid, 6-amino-5-[[5-[(3-chlorobenzoyl)amino]-2-sulfophenyl]azo]-4-hydroxy-, dipotassium salt; Acid Yellow 219; Azo dye intermediate YA-219
EINECS	Contact for details

Quality Control

Our production of Dipotassium 6-Amino-5-[[5-[(3-Chlorobenzoyl)Amino]-2-Sulphonatophenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and reliability. The product undergoes rigorous analytical testing, including HPLC for purity and identity confirmation. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are 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). The product is moisture-sensitive (hygroscopic); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Brownish-red to dark brown powder
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
Solubility (in Water)	Freely soluble

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