Description

2-Nitroaniline-4-Sulfonic Acid Sodium Salt is a key organic intermediate and dye precursor, valued for its role in synthesizing complex colorants and functional chemicals. Its significance lies in providing a reactive nitro and sulfonate group on an aniline backbone, enabling the production of vivid azo dyes and pigments. This compound is essential for manufacturers in the dye, pigment, and specialty chemical industries seeking reliable intermediates for high-performance color applications.

Application

• Primary intermediate for the synthesis of azo dyes and pigments, particularly for textiles and leather.
• Key starting material in the production of reactive dyes for cotton and other cellulosic fibers.
• Used in the manufacture of organic pigments for inks, paints, and plastics.
• Intermediate for specialty chemicals and functional additives.
• Potential use in research and development of pharmaceutical intermediates and agrochemicals.
• Employed in analytical chemistry as a reagent or standard.

Basic Information

Product Name	2-Nitroaniline-4-Sulfonic Acid Sodium Salt
CAS No.	5042-33-1
Molecular Formula	C6H5N2O5SNa
Molecular Weight	240.17 g/mol
Synonyms	4-Amino-3-nitrobenzenesulfonic Acid Sodium Salt; Sodium 4-Amino-3-nitrobenzenesulfonate; 2-Nitro-4-aminobenzenesulfonic Acid Sodium Salt; 4-Sulfo-2-nitroaniline Sodium Salt; Benzenesulfonic acid, 4-amino-3-nitro-, sodium salt (1:1); C.I. 37100; 2-Nitroaniline-4-sulfonate Sodium Salt
EINECS	225-726-9

Quality Control

Our 2-Nitroaniline-4-Sulfonic Acid Sodium Salt is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting these results are provided with every shipment and 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). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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