Description

Potassium 4-Nitrobenzenesulfonate H2O is a high-purity, water-containing salt of 4-nitrobenzenesulfonic acid. This compound serves as a versatile and stable synthetic intermediate and reagent in advanced chemical manufacturing. It is particularly valuable for industries requiring precise sulfonation and nitration chemistry, such as pharmaceutical synthesis, dye and pigment production, and specialty chemical research.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfonamide-based drugs.
• Dye and Pigment Manufacturing: Used as a precursor in the production of azo dyes and other colorants, leveraging its nitro and sulfonate functional groups.
• Chemical Synthesis Reagent: Acts as a source of the 4-nitrobenzenesulfonyl group in organic transformations and protecting group chemistry.
• Research & Development: Employed in academic and industrial R&D labs for method development and novel compound synthesis.
• Electroplating Additive: Can be utilized in specialized electroplating baths to modify surface properties and deposition characteristics.
• Polymer Modification: Used to introduce sulfonate and nitro functionalities into polymer chains to alter solubility or reactivity.

Basic Information

Product Name	Potassium 4-Nitrobenzenesulfonate H2O
CAS No.	81012-90-0
Molecular Formula	C6H4KNO6S • xH2O
Molecular Weight	Contact for details
Synonyms	Potassium 4-Nitrobenzenesulfonate Hydrate; Potassium p-Nitrobenzenesulfonate; 4-Nitrobenzenesulfonic Acid Potassium Salt; Benzenesulfonic acid, 4-nitro-, potassium salt; p-Nitrobenzenesulfonic Acid Potassium Salt; Potassium Nitrobenzene-4-sulfonate; PNBS-K; 81012-90-0
EINECS	Contact for details

Quality Control

Our Potassium 4-Nitrobenzenesulfonate H2O is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and composition. A comprehensive Certificate of Analysis (COA) is provided with every shipment, detailing results from HPLC, IR, and titration methods to guarantee consistent quality and reliability for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to pale yellow crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	Contact for details
Heavy Metals	< 20 ppm
Residue on Ignition	Contact for details
Solubility	Test in water

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