Description

3,5-Dinitro-4-Hydroxybenzenesulfonic Acid Potassium Salt is a high-purity, functionalized aromatic sulfonate salt with significant utility in advanced chemical synthesis. Its value lies in its role as a key intermediate and reagent for introducing specific functional groups into target molecules, enabling the development of dyes, pigments, and specialty chemicals. This compound is essential for R&D laboratories and production facilities in the fine chemical, pharmaceutical intermediate, and agrochemical sectors seeking reliable, high-quality building blocks.

Application

• Intermediate for Dyes and Pigments: Serves as a critical precursor in the synthesis of azo dyes and other complex colorants, contributing to color fastness and specific hue properties.
• Pharmaceutical Synthesis: Used as a building block in the research and development of active pharmaceutical ingredients (APIs), particularly those requiring nitro- and sulfonate-functionalized aromatic cores.
• Agrochemical Manufacturing: Functions as an intermediate in the production of certain herbicides and plant growth regulators, where its specific substitution pattern is valuable.
• Chemical Research & Development: Employed in academic and industrial R&D as a reagent for studying nitration and sulfonation reactions, or for creating novel molecular architectures.
• Photographic Chemicals: Can be utilized in the formulation of specialized photographic developers and other light-sensitive chemical systems.
• Cross-linking Agent: Potential use in polymer chemistry as a cross-linking agent or to introduce ionic character into polymer chains.

Basic Information

Product Name	3,5-Dinitro-4-Hydroxybenzenesulfonic Acid Potassium Salt
CAS No.	74525-39-6
Molecular Formula	C6H3KN2O8S
Molecular Weight	302.26 g/mol
Synonyms	Potassium 3,5-dinitro-4-hydroxybenzenesulfonate; 4-Hydroxy-3,5-dinitrobenzenesulfonic Acid Potassium Salt; Benzenesulfonic acid, 3,5-dinitro-4-hydroxy-, potassium salt; Dinitrohydroxybenzenesulfonic Acid K Salt; DNBS Potassium Salt
EINECS	Contact for details

Quality Control

Our 3,5-Dinitro-4-Hydroxybenzenesulfonic Acid Potassium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the high standards required for fine chemical intermediates. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are provided with every shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the container 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%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%
Solubility	Soluble in water, slightly soluble in ethanol

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