Description

4-Amino-3-[(2,5-Disulphophenyl)Azo]-5-Hydroxy-6-[(3-Phosphonophenyl)Azo]Naphthalene-2,7-Disulphonic Acid, Ammonium Sodium Salt is a high-purity, complex azo dye intermediate engineered for specialized industrial synthesis. This compound matters for its unique bifunctional structure, which provides two distinct reactive azo groups, enabling the creation of advanced dyes and pigments with enhanced color fastness and specific functional properties. It is primarily needed by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants and functional materials.

Application

• Primary Intermediate for Reactive Dyes: Key starting material for synthesizing high-grade reactive dyes used in textile dyeing and printing, particularly for cotton and cellulose fibers.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for inks, coatings, and plastics requiring specific chromaticity and stability.
• Functional Dye Synthesis: Serves as a precursor for dyes used in analytical chemistry, biological staining, and as sensitizers in photographic and imaging technologies.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo coupling reactions and photophysical properties.
• Liquid Crystal Dyes: Potential use in the synthesis of dyes for liquid crystal displays (LCDs) due to its planar, conjugated structure.

Basic Information

Product Name	4-Amino-3-[(2,5-Disulphophenyl)Azo]-5-Hydroxy-6-[(3-Phosphonophenyl)Azo]Naphthalene-2,7-Disulphonic Acid, Ammonium Sodium Salt
CAS No.	85068-61-7
Molecular Formula	C22H18N6O16P S4 • xNa • yNH4 (Contact for exact stoichiometry)
Molecular Weight	Contact for details
Synonyms	4-Amino-3-[(2,5-disulfophenyl)azo]-5-hydroxy-6-[(3-phosphonophenyl)azo]naphthalene-2,7-disulfonic acid ammonium sodium salt; Bis-azo naphthalene dye intermediate; Acid Black 210 (related dye class); C.I. 30027; Reactive Dye Intermediate 85068-61-7; Phosphonated azo dye intermediate; Disulfonated azo compound; Azo dye precursor for textiles
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Each lot undergoes comprehensive analysis, including HPLC for purity assessment and spectroscopic identification (IR, UV-Vis). A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, impurity profile, and moisture content to meet your specific application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture (KF Titration)	Max. 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
Related Substances (HPLC)	Total impurities: Max. 3.0% Any single impurity: Max. 1.0%

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