Description

5-Amino-2-[2-(4-Nitro-2-Sulphophenyl)Vinyl]Benzenesulphonic Acid, Sodium Salt is a high-purity, water-soluble anionic intermediate of significant commercial importance. Its unique molecular structure, featuring amino, nitro, and sulphonic acid groups, makes it a versatile building block for the synthesis of complex dyes and functional materials. This compound is essential for manufacturers in the specialty chemicals sector seeking to develop advanced colorants with specific fastness and application properties.

Application

• Primary Intermediate for Reactive Dyes: A key precursor in the synthesis of high-performance reactive dyes for cotton and cellulose fibers, contributing to excellent wash and light fastness.
• Synthesis of Acid Dyes: Used in manufacturing acid dyes for wool, silk, and nylon, providing bright and durable coloration.
• Production of Functional Dyes: Serves as a starting material for creating specialized dyes used in ink-jet printing, leather coloring, and paper dyes.
• Research & Development: A valuable compound for R&D laboratories focusing on novel chromophores, fluorescent markers, or photoactive materials.
• Fine Chemical Synthesis: Employed as a sulfonated aromatic intermediate in multi-step organic synthesis for pharmaceuticals or agrochemicals.

Basic Information

Product Name	5-Amino-2-[2-(4-Nitro-2-Sulphophenyl)Vinyl]Benzenesulphonic Acid, Sodium Salt
CAS No.	84787-94-0
Molecular Formula	C14H11N2NaO8S2
Molecular Weight	422.36 g/mol
Synonyms	5-Amino-2-[2-(4-nitro-2-sulfophenyl)ethenyl]benzenesulfonic acid sodium salt; Benzenesulfonic acid, 5-amino-2-[2-(4-nitro-2-sulfophenyl)ethenyl]-, sodium salt (1:1); Sodium 5-amino-2-[2-(4-nitro-2-sulfophenyl)vinyl]benzenesulfonate; C.I. Reactive Orange 78 intermediate; Dye Intermediate 84787-94-0; 4-Nitro-2-[(E)-2-(4-amino-2-sulfonatophenyl)ethenyl]benzenesulfonate
EINECS	Contact for details

Quality Control

Our production of 5-Amino-2-[2-(4-Nitro-2-Sulphophenyl)Vinyl]Benzenesulphonic Acid, Sodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment.

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 nature, the container must be kept sealed to minimize exposure to atmospheric moisture. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder or crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (Area Percent)
Water Content	≤ 5.0% (Karl Fischer)
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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