Description

5-[(4-Chlorobenzoyl)Amino]-4-Hydroxy-3-[[4-[(2-Hydroxy-7-Sulpho-1-Naphthyl)Azo]-2,5-Dimethoxyphenyl]Azo]Naphthalene-2,7-Disulphonic Acid is a high-purity, complex azo dye intermediate. This compound is valued for its role in synthesizing specialized dyes and pigments with specific colorfastness and functional properties. It is essential for manufacturers in the textile, ink, and specialty chemical industries requiring precise chromophores for advanced applications.

Application

• Primary intermediate for the synthesis of high-performance azo dyes and pigments.
• Used in the production of textile dyes, particularly for fibers requiring good wash and light fastness.
• Key component in manufacturing specialty inks, including those for security printing and high-value packaging.
• Employed in the development of functional dyes for analytical chemistry and biological staining applications.
• Potential use as a colorant precursor in the plastics and coatings industries.
• Research and development of novel photographic and imaging chemicals.

Basic Information

Product Name	5-[(4-Chlorobenzoyl)Amino]-4-Hydroxy-3-[[4-[(2-Hydroxy-7-Sulpho-1-Naphthyl)Azo]-2,5-Dimethoxyphenyl]Azo]Naphthalene-2,7-Disulphonic Acid
CAS No.	31825-07-7
Molecular Formula	C35H23ClN4O13S3
Molecular Weight	863.23 g/mol
Synonyms	Acid Red 337; C.I. 17200; 5-[(4-Chlorobenzoyl)amino]-4-hydroxy-3-[[4-[(2-hydroxy-7-sulfo-1-naphthyl)azo]-2,5-dimethoxyphenyl]azo]naphthalene-2,7-disulfonic acid; 2,7-Naphthalenedisulfonic acid, 5-[(4-chlorobenzoyl)amino]-4-hydroxy-3-[[4-[(2-hydroxy-7-sulfo-1-naphthyl)azo]-2,5-dimethoxyphenyl]azo]-; C.I. Acid Red 337; Azo dye intermediate 31825-07-7; 4-Hydroxy-3-[[4-[(2-hydroxy-7-sulfo-1-naphthalenyl)azo]-2,5-dimethoxyphenyl]azo]-5-[(4-chlorobenzoyl)amino]-2,7-naphthalenedisulfonic acid
EINECS	Contact for details

Quality Control

Our 5-[(4-Chlorobenzoyl)Amino]-4-Hydroxy-3-[[4-[(2-Hydroxy-7-Sulpho-1-Naphthyl)Azo]-2,5-Dimethoxyphenyl]Azo]Naphthalene-2,7-Disulphonic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A Certificate of Analysis (COA) detailing key specifications is provided with every shipment to guarantee it meets the agreed-upon standards for your application.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and performance.

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

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