Description

Chlorosulfonic acid for synthesis is a highly reactive and versatile inorganic acid, primarily valued as a powerful sulfonating and chlorosulfonating agent in organic synthesis. Its ability to introduce sulfonyl chloride groups makes it a critical intermediate for manufacturing a wide range of industrial and fine chemicals. This compound is essential for producers of pharmaceuticals, agrochemicals, dyes, and surfactants who require high-purity reagents for complex synthesis pathways.

Application

• Pharmaceutical Intermediates: Key reagent in the synthesis of sulfonamide drugs and other active pharmaceutical ingredients (APIs).
• Agrochemical Production: Used in the manufacture of herbicides, fungicides, and insecticides that contain sulfonyl groups.
• Dye and Pigment Synthesis: Essential for producing sulfonated dyes, which offer excellent water solubility and color fastness.
• Surfactant and Detergent Chemicals: Serves as a precursor for anionic surfactants like alkylbenzene sulfonates.
• Polymer Modification: Employed to introduce sulfonate groups into polymers to alter their properties, such as solubility or ionic character.
• Catalyst and Reagent: Acts as a catalyst in various organic reactions and as a chlorinating agent in specific synthetic routes.
• Laboratory Research: Used in R&D for method development and small-scale synthesis of novel compounds.

Basic Information

Product Name	Chlorosulfonic Acid for Synthesis
CAS No.	7790-94-4
Molecular Formula	ClHO3S
Molecular Weight	116.52 g/mol
Synonyms	Chlorosulfuric Acid; Sulfuric Chlorohydrin; Monochlorosulfuric Acid; Sulfonyl Hydroxide Chloride; Sulfuric Oxychloride; Chlorosulfonyl Hydroxide; CSA
EINECS	232-234-6

Quality Control

Our Chlorosulfonic Acid for Synthesis is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for demanding synthetic applications. A Certificate of Analysis (COA) detailing assay, purity, and impurity profiles is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area, away from incompatible materials such as bases, alcohols, and water. Due to its highly corrosive and moisture-sensitive nature, containers must be kept tightly sealed to prevent reaction with atmospheric moisture. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
Density (at 20°C)	~1.75 g/mL
Iron (Fe)	≤ 10 ppm
Heavy Metals (as Pb)	≤ 5 ppm

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