Description

5-[[2-Amino-4-[[4-[2-(4-Nitro-2-Sulphophenyl)Vinyl]-3-Sulphophenyl]Azoxy]Phenyl]Azo]Naphthalene-1-Sulphonic Acid is a high-purity, complex synthetic organic compound belonging to the azo dye chemical class. This product is engineered to deliver consistent and vibrant coloration, making it a critical intermediate for demanding industrial applications. It is primarily utilized by manufacturers in the textile, specialty inks, and advanced materials sectors who require precise and stable chromophores.

Application

• Textile Dye Intermediate: A key precursor for synthesizing high-performance dyes for synthetic fibers like polyester and nylon, offering excellent wash and light fastness.
• Specialty Ink Formulation: Used in the production of colorants for high-resolution inkjet, security, and packaging inks where color consistency is paramount.
• Functional Material Synthesis: Serves as a building block for creating advanced materials, including colorimetric sensors and light-absorbing layers in optoelectronic devices.
• Research & Development: Employed in academic and industrial R&D labs for developing novel dyes, pigments, and photochemical systems.
• Leather and Paper Coloring: Applicable as an intermediate for dyes used in the leather tanning and specialty paper industries.

Basic Information

Product Name	5-[[2-Amino-4-[[4-[2-(4-Nitro-2-Sulphophenyl)Vinyl]-3-Sulphophenyl]Azoxy]Phenyl]Azo]Naphthalene-1-Sulphonic Acid
CAS No.	85711-23-5
Molecular Formula	C30H21N7O11S3
Molecular Weight	767.72 g/mol
Synonyms	Acid Red 337 (C.I. 17220); 5-[(2-Amino-4-{[4-(2-(4-nitro-2-sulfophenyl)ethenyl)-3-sulfophenyl]diazenyl}phenyl)diazenyl]naphthalene-1-sulfonic acid; Azo dye intermediate 85711-23-5; 1-Naphthalenesulfonic acid, 5-[(2-amino-4-[[4-[2-(4-nitro-2-sulfophenyl)ethenyl]-3-sulfophenyl]diazenyl]phenyl)diazenyl]-; C.I. 17220; Reactive Red Dye Intermediate; Sulfonated azo dye precursor
EINECS	Contact for details

Quality Control

Our production of 5-[[2-Amino-4-[[4-[2-(4-Nitro-2-Sulphophenyl)Vinyl]-3-Sulphophenyl]Azoxy]Phenyl]Azo]Naphthalene-1-Sulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%

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