Description

α-[n-Ethyl-4-[[4-(Phenylazo)-1-Naphtyl]Azo]Anilino]-m-Toluenesulfonic Acid is a specialized azo dye intermediate valued for its ability to impart specific color properties to final products. This compound matters for its role in synthesizing high-performance dyes and pigments with excellent color fastness and stability. It is primarily needed by manufacturers in the textile, ink, and specialty chemical industries seeking to produce vibrant and durable colorants.

Application

• Textile Dyeing: A key intermediate for the synthesis of azo dyes used in coloring natural and synthetic fibers.
• Ink Manufacturing: Used in the production of pigments for printing inks, including those for packaging and publications.
• Pigment Production: Serves as a precursor for creating organic pigments with applications in plastics, paints, and coatings.
• Research & Development: Utilized in chemical research for developing new chromophores and studying dye chemistry.
• Specialty Chemicals: Employed in the formulation of colorants for niche applications such as leather dyes or paper coloring.

Basic Information

Product Name	α-[n-Ethyl-4-[[4-(Phenylazo)-1-Naphtyl]Azo]Anilino]-m-Toluenesulfonic Acid
CAS No.	33450-33-8
Molecular Formula	C31H27N5O3S
Molecular Weight	549.65 g/mol
Synonyms	m-Toluenesulfonic acid, α-[N-ethyl-4-[[4-(phenylazo)-1-naphthyl]azo]anilino]-; 4-[[4-(Phenylazo)-1-naphthyl]azo]-N-ethyl-N-(3-methylphenyl)-benzenesulfonamide; C.I. Solvent Yellow 56 intermediate; Azo dye intermediate 33450-33-8; Benzenesulfonic acid, 4-[[4-(phenylazo)-1-naphthalenyl]azo]-N-ethyl-N-(3-methylphenyl)-; Ethyl-[4-[[4-(phenylazo)-1-naphthyl]azo]phenyl]-(3-methylphenyl)amine-4'-sulfonic acid
EINECS	Contact for details

Quality Control

Our α-[n-Ethyl-4-[[4-(Phenylazo)-1-Naphtyl]Azo]Anilino]-m-Toluenesulfonic Acid undergoes rigorous quality testing to ensure compliance with industry standards for dye intermediates. Certificates of Analysis (COA) are available upon request, detailing key parameters such as purity, identity, and impurity profiles to support your quality assurance protocols.

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 incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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