Description

Hydroxylamine-o-Sulfonic Acid Monopotassium Salt is a versatile and reactive sulfonated hydroxylamine derivative, serving as a key reagent for introducing the aminooxy functional group. Its primary commercial value lies in its role as a stable, crystalline precursor for oximation and amination reactions in complex organic synthesis. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing active ingredients, ligands, and advanced materials.

Application

• Pharmaceutical Intermediate: Critical for the synthesis of oxime-containing drug molecules, including certain antibiotics and enzyme inhibitors.
• Agrochemical Synthesis: Used in the production of herbicides, pesticides, and plant growth regulators that require aminooxy or hydrazine motifs.
• Polymer Modification: Acts as a functionalization agent to introduce reactive aminooxy groups onto polymer backbones for cross-linking or creating smart materials.
• Bioconjugation Chemistry: Enables the site-specific labeling and cross-linking of biomolecules (proteins, carbohydrates) for diagnostics and biochemical research.
• Organic Synthesis Reagent: A valuable building block for constructing heterocycles (e.g., isoxazoles, oxadiazoles) and other nitrogen-containing compounds.
• Catalyst and Ligand Preparation: Used in the preparation of specialized ligands for metal catalysis and coordination chemistry.

Basic Information

Product Name	Hydroxylamine-o-Sulfonic Acid Monopotassium Salt
CAS No.	49559-20-8
Molecular Formula	H4KNO4S
Molecular Weight	177.22 g/mol
Synonyms	Potassium Hydroxylamine-o-Sulfonate; Potassium (Aminooxy)sulfonate; HOSA Potassium Salt; Aminooxysulfonic Acid Potassium Salt; Hydroxylamine-O-sulfonic Acid K Salt; KSOS; Potassium Sulfamate N-oxide; N-Hydroxyaminosulfonic Acid Potassium Salt
EINECS	Contact for details

Quality Control

Our Hydroxylamine-o-Sulfonic Acid Monopotassium Salt is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic and moisture-sensitive nature, the container must be kept tightly sealed in a dry environment. Protect from oxidizing agents and strong acids.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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