Description

2-Nitroaniline-4-Sulfonic Acid is a key aromatic sulfonic acid derivative, serving as a vital intermediate in the synthesis of complex organic molecules. Its primary value lies in providing a reactive nitro and sulfonic acid functional group pair for subsequent chemical transformations, enabling the production of high-value dyes, pigments, and other specialty chemicals. This compound is essential for manufacturers and R&D laboratories in the dyestuff, pharmaceutical, and agrochemical sectors seeking reliable, high-purity building blocks for their synthesis processes.

Application

• Dye and Pigment Intermediate: A crucial precursor in the manufacturing of azo dyes, acid dyes, and other colorants, contributing to color fastness and molecular stability.
• Pharmaceutical Synthesis: Used as a building block for synthesizing specific active pharmaceutical ingredients (APIs) and diagnostic agents that require the nitroaniline sulfonate structure.
• Agrochemical Production: Serves as an intermediate in the synthesis of certain herbicides, pesticides, and plant growth regulators.
• Chemical Research & Development: Employed in organic synthesis laboratories for developing novel compounds, catalysts, and functional materials.
• Corrosion Inhibitor Formulation: Can be utilized in the development of specialty chemical formulations designed to protect metal surfaces.
• Photographic Chemical: Finds application in the production of certain light-sensitive chemicals used in photographic processes.

Basic Information

Product Name	2-Nitroaniline-4-Sulfonic Acid
CAS No.	616-84-2
Molecular Formula	C6H6N2O5S
Molecular Weight	218.19 g/mol
Synonyms	4-Amino-3-nitrobenzenesulfonic Acid; 2-Nitro-4-aminobenzenesulfonic Acid; 4-Sulfo-2-nitroaniline; 3-Nitro-4-aminobenzenesulfonic Acid; 4-Amino-3-nitrobenzenesulphonic Acid; 2-Nitroaniline-p-sulfonic Acid; 2-Nitro-1-amino-4-sulfobenzene; Aniline-4-sulfonic acid, 2-nitro-
EINECS	210-498-1

Quality Control

Our 2-Nitroaniline-4-Sulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing results from tests including assay, moisture content, and heavy metals. Our quality commitment ensures batch-to-batch consistency and reliability for your critical synthesis processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling properties. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility	Soluble in alkaline aqueous solutions

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