Description

p-[[4-(Chloroazo)-5-Methoxy-o-Tolyl]Azo]Benzenesulphonic Acid is a specialized azo dye intermediate, characterized by its distinct molecular structure incorporating chlorinated and methoxylated aromatic rings. This compound is valued for its role in synthesizing high-performance pigments and dyes, offering excellent color fastness and thermal stability. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries for producing vivid and durable colorants.

Application

• Key intermediate for the synthesis of high-performance azo pigments and dyes.
• Used in the coloration of synthetic fibers and textiles requiring excellent wash and light fastness.
• Manufacture of colorants for industrial inks, including printing and packaging inks.
• Production of pigments for plastics and polymer masterbatches.
• Component in the formulation of specialty coatings and paints.
• Potential use in the research and development of functional dyes for non-textile applications.

Basic Information

Product Name	p-[[4-(Chloroazo)-5-Methoxy-o-Tolyl]Azo]Benzenesulphonic Acid
CAS No.	67906-54-1
Molecular Formula	C20H16ClN4O4S
Molecular Weight	452.88 g/mol
Synonyms	Benzenesulfonic acid, p-[[4-(chloroazo)-5-methoxy-o-tolyl]azo]-; 4-[(E)-[4-[(E)-(4-Chlorophenyl)diazenyl]-5-methoxy-2-methylphenyl]diazenyl]benzenesulfonic acid; Azo dye intermediate 67906-54-1; CI 26080 (related class); Chlorinated methoxy azo dye acid; p-(4-Chloroazo-5-methoxy-o-tolylazo)benzenesulfonic acid
EINECS	Contact for details

Quality Control

Our production of p-[[4-(Chloroazo)-5-Methoxy-o-Tolyl]Azo]Benzenesulphonic Acid adheres to stringent quality protocols to ensure batch-to-batch consistency and purity for industrial synthesis. The material is manufactured under a cGMP-compliant quality management system and is supported by comprehensive analytical testing. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming identity, purity, and impurity profiles.

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. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%

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