Description

Pyridine, Compound With Sulphur Trioxide is a versatile chemical complex formed from pyridine and sulfur trioxide, widely recognized by its CAS number 28322-92-1. This compound serves as a powerful sulfonating and sulfating agent, offering controlled reactivity for precise chemical synthesis. It is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to introduce sulfonate groups into complex molecules.

Application

• Pharmaceutical Intermediates: Key reagent in the synthesis of sulfonated drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Production: Used in the manufacture of sulfonated herbicides, pesticides, and plant growth regulators.
• Dye and Pigment Synthesis: Facilitates the sulfonation of dyes to enhance solubility and color fastness.
• Surfactant and Detergent Chemicals: Acts as a sulfating agent in the production of anionic surfactants.
• Polymer Modification: Employed to introduce sulfonate groups into polymers for ion-exchange resins or water-soluble materials.
• Organic Synthesis: A valuable reagent for laboratory-scale and industrial sulfonation reactions under mild conditions.

Basic Information

Product Name	Pyridine, Compound With Sulphur Trioxide
CAS No.	28322-92-1
Molecular Formula	C5H5N · SO3
Molecular Weight	159.16 g/mol
Synonyms	Pyridine Sulfur Trioxide Complex; Pyridine-SO3 Complex; Sulfur Trioxide Pyridine Complex; Pyridinium Sulfonate; Pyridine · SO3; Sulfuric Anhydride-Pyridine Complex; Pyridine-Sulfotrioxide
EINECS	Contact for details

Quality Control

Our Pyridine, Compound With Sulphur Trioxide is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including assay, identification, and impurity profiling, to ensure it meets precise customer and industry specifications. A Certificate of Analysis (COA) documenting purity, physical properties, and safety data is provided with every shipment.

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) and must be kept under anhydrous conditions to prevent decomposition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms
Assay (Titration)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Pyridine Content (GC)	Reported on COA

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