Description

4-Amino-3,5-Dinitrobenzenesulfonic Acid is a specialized aromatic sulfonic acid derivative characterized by its amino and nitro functional groups. This compound serves as a versatile and high-value chemical intermediate for the synthesis of complex organic molecules, particularly dyes and pigments. It is essential for manufacturers in the fine chemicals, agrochemical, and specialty materials sectors seeking to develop products with specific chromophoric or reactive properties.

Application

• Primary Intermediate for Dyes and Pigments: A key building block in the synthesis of azo dyes, acid dyes, and other complex colorants.
• Agrochemical Synthesis: Used in the production of certain herbicides and plant growth regulators that require a sulfonated aromatic backbone.
• Pharmaceutical Intermediate: Potential use in the research and development of active pharmaceutical ingredients (APIs) with sulfonic acid moieties.
• Corrosion Inhibitor Formulation: Acts as a component in specialty chemical formulations designed to protect metal surfaces.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity or ion-exchange capacity.
• Research & Development: Serves as a standard or reagent in organic chemistry research for studying nitration and sulfonation reactions.

Basic Information

Item	Details
Product Name	4-Amino-3,5-Dinitrobenzenesulfonic Acid
CAS No.	98139-22-1
Molecular Formula	C6H5N3O7S
Molecular Weight	263.18 g/mol
Synonyms	3,5-Dinitro-4-aminobenzenesulfonic Acid; 4-Amino-3,5-dinitrobenzenesulfonate; Benzenesulfonic acid, 4-amino-3,5-dinitro-; 2-Amino-4,6-dinitrobenzenesulfonic acid (isomer); ANSA; 4-ADNSA
EINECS	Contact for details

Quality Control

Our production of 4-Amino-3,5-Dinitrobenzenesulfonic Acid adheres to stringent internal quality protocols. Every batch is analyzed to ensure consistent purity and meets the specifications agreed upon with our clients. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment, ensuring full traceability and compliance with your quality management systems.

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 product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

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

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