Description

Sodium 4,5-Dichloro-2-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate is a high-purity azo dye intermediate and analytical reagent known for its distinct chromophoric properties. This compound is critical for ensuring consistent color development and precise analytical results in demanding industrial and laboratory settings. It is primarily utilized by manufacturers and researchers in the dye and pigment, analytical chemistry, and specialty chemical synthesis sectors.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of specific azo dyes and pigments, particularly for applications requiring a naphthyl-based chromophore.
• Analytical Reagent: Used as a complexometric indicator or a colorimetric reagent in analytical chemistry for the detection and quantification of metal ions.
• Research & Development: Serves as a building block in organic synthesis for research into novel colored compounds, sensors, or functional materials.
• Textile Industry: Employed in the development and testing of specialized dyes for synthetic or natural fibers.
• Ink Formulation: A potential component in the formulation of specialty inks where specific colorfastness or chemical resistance is required.
• Biological Staining: May find application as a histological stain in life science research due to its ability to bind to specific cellular structures.

Basic Information

Product Name	Sodium 4,5-Dichloro-2-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate
CAS No.	5850-81-7
Molecular Formula	C16H9Cl2N2NaO4S
Molecular Weight	419.21 g/mol
Synonyms	4,5-Dichloro-2-[(2-hydroxy-1-naphthyl)azo]benzenesulfonic Acid Sodium Salt; C.I. 15865; Sodium 4,5-Dichloro-2-[(2-hydroxy-1-naphthyl)azo]benzenesulfonate; 1-Naphthol-2-azo-4',5'-dichlorobenzenesulfonic Acid Sodium Salt; Benzenesulfonic acid, 4,5-dichloro-2-[(2-hydroxy-1-naphthalenyl)azo]-, sodium salt (1:1); Azo Dye Intermediate 5850-81-7
EINECS	Contact for details

Quality Control

Our Sodium 4,5-Dichloro-2-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate is produced under strict quality management protocols. Every batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and compliance.

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 use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	Contact for details

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