Description

Sodium 8-[(2-Hydroxy-1-Naphthyl)Azo]Naphthalene-2-Sulphonate is a high-purity azo dye intermediate and analytical reagent. This compound is valued for its precise chemical structure, which provides excellent chromogenic properties and reactivity for specialized synthesis. It is primarily required by manufacturers in the dye and pigment industry, as well as by research laboratories developing colorimetric assays and chemical sensors.

Application

• Dye and Pigment Manufacturing: A key intermediate for synthesizing high-value azo dyes and pigments, particularly for applications requiring specific shades of red, orange, or brown.
• Analytical Chemistry Reagent: Used as a chromogenic agent in the development of colorimetric tests and indicators for metal ion detection (e.g., aluminum, magnesium).
• Research & Development: Serves as a building block in organic synthesis for novel functional materials and specialty chemicals in academic and industrial R&D settings.
• Textile Industry: Employed in the production of dyes for coloring natural and synthetic fibers.
• Ink Formulation: A component in the manufacture of specialized printing inks where specific color fastness and properties are required.
• Biological Staining: Potential use in histological stains and as a dye for microscopic analysis in life sciences.

Basic Information

Product Name	Sodium 8-[(2-Hydroxy-1-Naphthyl)Azo]Naphthalene-2-Sulphonate
CAS No.	85136-41-0
Molecular Formula	C20H13N2NaO4S
Molecular Weight	400.38 g/mol
Synonyms	Acid Orange 20 (C.I. 14600); 8-[(2-Hydroxy-1-naphthyl)azo]naphthalene-2-sulfonic acid sodium salt; 1-Naphthol-2-azo-2-naphthol-6-sulfonic acid sodium salt; Sodium 1-(2-hydroxy-1-naphthylazo)-2-naphthol-6-sulfonate; C.I. Acid Orange 20; Orange GGN; Acid Leather Orange PG; Tropaeolin G
EINECS	Contact for details

Quality Control

Our Sodium 8-[(2-Hydroxy-1-Naphthyl)Azo]Naphthalene-2-Sulphonate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting key parameters such as assay, heavy metal content, and related substances are available upon request 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. This product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Contact for details

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