Description

2-[[4-[[4-[[8-[(2,4-diamino-5-nitrophenyl)azo]-1-hydroxy-5-sulpho-2-naphthyl]azo]-6-sulpho-1-naphthyl]azo]-1-naphthyl]azo]benzene-1,4-disulphonic acid, potassium sodium salt is a complex, high-purity azo dye intermediate essential for producing vibrant and stable colorants. Its multi-azo and sulphonic acid structure provides excellent water solubility and strong chromophoric properties, making it a critical component for achieving specific, high-performance hues. This compound is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to develop advanced dyes and pigments with superior fastness and color strength.

Application

• Textile Dyeing: A key intermediate for synthesizing high-grade, wash-fast azo dyes for cotton, wool, and synthetic fibers.
• Ink Manufacturing: Used in the production of colorants for inks, including those for packaging, security, and digital printing applications.
• Pigment Production: Serves as a precursor for creating organic pigments used in paints, plastics, and industrial coatings.
• Leather Coloring: Employed in the formulation of dyes for the leather tanning and finishing industry.
• Paper Coloring: Used in the manufacture of dyes for specialty and decorative papers.
• Research & Development: Acts as a reference standard and building block in chemical R&D for novel chromophores and functional materials.

Basic Information

Product Name	2-[[4-[[4-[[8-[(2,4-diamino-5-nitrophenyl)azo]-1-hydroxy-5-sulpho-2-naphthyl]azo]-6-sulpho-1-naphthyl]azo]-1-naphthyl]azo]benzene-1,4-disulphonic acid, potassium sodium salt
CAS No.	83221-45-8
Molecular Formula	C44H24KN10NaO16S4
Molecular Weight	~1150.0 g/mol (Contact for exact details)
Synonyms	Potassium sodium 2-[[4-[[4-[[8-[(2,4-diamino-5-nitrophenyl)azo]-1-hydroxy-5-sulfo-2-naphthyl]azo]-6-sulfo-1-naphthyl]azo]-1-naphthyl]azo]benzene-1,4-disulfonate; Azo Dye Intermediate 83221-45-8; CI 34200 (related); Tetrakisazo Dye Intermediate; Acid Black Dye Intermediate; 1,3-Benzenedisulfonic acid, 2-[[4-[[4-[[8-[(2,4-diamino-5-nitrophenyl)azo]-1-hydroxy-5-sulfo-2-naphthyl]azo]-6-sulfo-1-naphthyl]azo]-1-naphthyl]azo]-, potassium sodium salt
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Every lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. Certificates of Analysis (COA) detailing all relevant specifications are provided and can be tailored to meet specific customer requirements and industry standards.

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 to prevent absorption of moisture from the air.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Contact for higher grades)
Water Content (KF)	≤ 5.0%
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.