Description

Sodium 4-[[4-[(2-Phenyl-1H-Indol-3-Yl)Azo]Phenyl]Azo]Benzenesulphonate is a high-purity, synthetic azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart vivid and stable coloration, making it a critical building block in the production of specialized dyes and pigments. It is primarily sought after by manufacturers in the textile, ink, and specialty polymer industries for creating high-performance colorants.

Application

• Textile Dyeing: A key intermediate for synthesizing high-grade, wash-fast azo dyes for natural and synthetic fibers.
• Ink Formulation: Used in the production of colorants for specialty printing inks, including inks for packaging and security applications.
• Pigment Manufacturing: Serves as a precursor for creating organic pigments used in plastics, paints, and coatings.
• Research & Development: Employed as a standard or experimental compound in chemical research and analytical method development.
• Specialty Polymers: Can be incorporated into polymers to develop materials with specific optical or colorimetric properties.

Basic Information

Product Name	Sodium 4-[[4-[(2-Phenyl-1H-Indol-3-Yl)Azo]Phenyl]Azo]Benzenesulphonate
CAS No.	50814-28-3
Molecular Formula	C32H21N5NaO3S
Molecular Weight	578.60 g/mol
Synonyms	Benzenesulfonic acid, 4-[[4-[(2-phenyl-1H-indol-3-yl)azo]phenyl]azo]-, sodium salt; C.I. 11290; Sodium 4-[(E)-[4-[(E)-(2-phenyl-1H-indol-3-yl)diazenyl]phenyl]diazenyl]benzenesulfonate; 2-Phenyl-3-[4-(4-sulfophenylazo)phenylazo]indole sodium salt; Acid Black 48 (related); Azo dye intermediate 50814-28-3
EINECS	Contact for details

Quality Control

Our production of Sodium 4-[[4-[(2-Phenyl-1H-Indol-3-Yl)Azo]Phenyl]Azo]Benzenesulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Every lot is subjected to comprehensive analytical testing, including chromatographic and spectroscopic methods, to confirm identity and assay. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee compliance with your technical requirements.

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, which can affect product performance.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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