Description

4-[[4-(Dimethylamino)Phenyl]Azo]Benzenesulphonic Acid is a synthetic organic compound belonging to the class of azo dyes and sulfonic acids. This chemical serves as a crucial intermediate and precursor in the synthesis of more complex dyes, pigments, and functional colorants. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries seeking to develop products with specific chromatic and application properties.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing acid dyes, direct dyes, and other azo-based colorants.
• Textile Industry: Used in the production of dyes for coloring natural and synthetic fibers like wool, silk, and nylon.
• Ink Manufacturing: Serves as a precursor for colorants used in printing inks for packaging and publications.
• Research & Development: Employed in chemical research for developing new chromophores and studying azo coupling reactions.
• Specialty Chemicals: Potential use in the synthesis of functional materials where the sulfonic acid group imparts solubility or ionic character.

Basic Information

Product Name	4-[[4-(Dimethylamino)Phenyl]Azo]Benzenesulphonic Acid
CAS No.	502-02-3
Molecular Formula	C14H15N3O3S
Molecular Weight	305.35 g/mol
Synonyms	4-[(4-Dimethylaminophenyl)azo]benzenesulfonic acid; p-(p-Dimethylaminoazobenzene)sulfonic acid; Dimethyl Yellow sulfonic acid; Methyl Yellow sulfonic acid; Butter Yellow sulfonic acid; C.I. 11020; Acid Yellow 36 (related); 4-Dimethylaminoazobenzene-4'-sulfonic acid
EINECS	207-927-2

Quality Control

Our production of 4-[[4-(Dimethylamino)Phenyl]Azo]Benzenesulphonic Acid adheres to stringent quality protocols. Every batch is analyzed to ensure consistent purity and meets the specifications required for industrial synthesis. Certificates of Analysis (COA) documenting key parameters such as assay, identity, and impurity profiles are available upon request to support your quality assurance processes.

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). Keep away from strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	Orange to brown powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%

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