Description

4-[[3-Methyl-4-(1-Pyrrolidinyl)Phenyl]Azo]Benzenesulfonic Acid is a specialized azo dye intermediate characterized by its distinct molecular structure incorporating a pyrrolidine moiety and a sulfonic acid group. This compound is valued for its role in synthesizing high-performance dyes and pigments with enhanced color fastness and solubility properties. It is primarily sought by manufacturers in the dyestuff, textile, and specialty chemical industries for producing colors used in inks, coatings, and synthetic fibers.

Application

• Key intermediate for the synthesis of azo disperse dyes and acid dyes.
• Used in the production of colorants for textile fibers, including polyester and nylon.
• Precursor for pigments and dyes applied in inks for digital and industrial printing.
• Component in the manufacture of dyes for leather and paper coloring.
• Intermediate in research and development of novel chromophores for advanced material science.
• Potential use in the formulation of functional dyes for non-textile applications.

Basic Information

Product Name	4-[[3-Methyl-4-(1-Pyrrolidinyl)Phenyl]Azo]Benzenesulfonic Acid
CAS No.	38233-66-8
Molecular Formula	C17H19N3O3S
Molecular Weight	345.42 g/mol
Synonyms	Benzenesulfonic acid, 4-[[3-methyl-4-(1-pyrrolidinyl)phenyl]azo]-; 4-[(3-Methyl-4-pyrrolidin-1-ylphenyl)diazenyl]benzenesulfonic acid; C.I. Disperse Yellow 119 intermediate; Azo dye intermediate 38233-66-8; 3-Methyl-4-(pyrrolidin-1-yl)azobenzene-4'-sulfonic acid; 4-((3-Methyl-4-(pyrrolidin-1-yl)phenyl)diazenyl)benzenesulfonic acid
EINECS	Contact for details

Quality Control

Our production of 4-[[3-Methyl-4-(1-Pyrrolidinyl)Phenyl]Azo]Benzenesulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. The material is subjected to comprehensive analytical testing, including HPLC, IR, and titration methods, to verify identity and assay. Certificates of Analysis (COA) documenting all critical specifications are available upon request to support your quality assurance and regulatory needs.

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 nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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