Description

2-Chloro-5-[[5-Hydroxy-4-[(2-Hydroxy-1-Naphthyl)Azo]-o-Tolyl]Azo]Benzenesulphonic Acid is a specialized azo dye intermediate, valued for its ability to impart specific color properties and chemical functionality. This compound is critical for synthesizing high-performance dyes and pigments with excellent light and wash fastness. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to develop vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of complex, high-value azo dyes for textiles and fibers.
• Textile Dyeing and Printing: Used to produce dyes for coloring natural and synthetic fabrics, offering good color yield and fastness properties.
• Ink Formulation: Employed in the manufacture of pigments for industrial inks, including those used in packaging and printing.
• Specialty Coatings and Paints: Functions as a colorant precursor in coatings where specific chromaticity and stability are required.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo coupling reactions.
• Functional Material Synthesis: Potential use in creating materials for optical applications or sensors due to its conjugated aromatic structure.

Basic Information

Product Name	2-Chloro-5-[[5-Hydroxy-4-[(2-Hydroxy-1-Naphthyl)Azo]-o-Tolyl]Azo]Benzenesulphonic Acid
CAS No.	64349-27-5
Molecular Formula	C23H16ClN4O5S
Molecular Weight	503.91 g/mol
Synonyms	Benzenesulfonic acid, 2-chloro-5-[[5-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-2-methylphenyl]azo]-; C.I. 12870; Acid Orange 128; 2-Chloro-5-((5-hydroxy-4-((2-hydroxy-1-naphthyl)azo)-o-tolyl)azo)benzenesulfonic acid; 2-Chloro-5-[(5-hydroxy-4-[(2-hydroxynaphthalen-1-yl)diazenyl]-2-methylphenyl)diazenyl]benzenesulfonic acid; Azo dye intermediate 64349-27-5; 1-Naphthalenesulfonic acid derivative
EINECS	Contact for details

Quality Control

Our production of 2-Chloro-5-[[5-Hydroxy-4-[(2-Hydroxy-1-Naphthyl)Azo]-o-Tolyl]Azo]Benzenesulphonic Acid adheres to stringent quality protocols to ensure batch-to-batch consistency and purity for industrial applications. Each lot undergoes comprehensive analysis, including identity confirmation, purity assay, and impurity profiling. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory 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). This compound is light-sensitive (store away from light) and may be hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 2.0%
Sulfated Ash	Max. 0.5%
Heavy Metals (as Pb)	Max. 20 ppm
Related Substances (HPLC)	Individual impurity: Max. 1.0% Total impurities: Max. 3.0%

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