Description

1H-Indole-5-Sulfonic Acid, 2-Phenyl-3-2-(Phenylsulfonyl)Phenylazo-, Monosodium Salt is a specialized synthetic organic compound belonging to the azo dye and sulfonated indole chemical class. This product is engineered to deliver consistent and vibrant coloration, making it a critical component for high-performance applications. It is primarily utilized by manufacturers in the dye and pigment industries seeking reliable intermediates for creating complex colorants.

Application

• Dye Intermediate: A key precursor in the synthesis of high-value, complex azo dyes for textiles and specialty inks.
• Pigment Manufacturing: Used in the production of organic pigments for plastics, coatings, and printing applications.
• Research & Development: Serves as a valuable building block in chemical research for developing novel chromophores and functional materials.
• Specialty Colorants: Employed in formulating colorants for niche applications requiring specific solubility or stability profiles.
• Analytical Chemistry: Can be used as a standard or reagent in analytical methods for dye identification and quantification.

Basic Information

Product Name	1H-Indole-5-Sulfonic Acid, 2-Phenyl-3-2-(Phenylsulfonyl)Phenylazo-, Monosodium Salt
CAS No.	90677-63-7
Molecular Formula	C26H18N3NaO5S2
Molecular Weight	539.55 g/mol
Synonyms	Monosodium 2-phenyl-3-[2-(phenylsulfonyl)phenyl]azo-1H-indole-5-sulfonate; 5-Sulfo-2-phenyl-3-[2-(phenylsulfonyl)phenyl]azoindole Sodium Salt; Acid Red Dye Intermediate; Azo Indole Sulfonate; C.I. Acid Red Dye Precursor; Sodium 1H-Indole-5-sulfonate derivative; 2-Phenyl-3-(2-sulfophenylazo)indole-5-sulfonic acid sodium salt (related form)
EINECS	Contact for details

Quality Control

Our production of 1H-Indole-5-Sulfonic Acid, 2-Phenyl-3-2-(Phenylsulfonyl)Phenylazo-, Monosodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent performance. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics 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); ensure the container is kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Reddish-brown 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	≤ 20 ppm
Solubility	Soluble in water, DMF; slightly soluble in ethanol

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