Description

Chlorosulfuric Acid Propyl Ester is a versatile organosulfur compound primarily used as a key sulfonating and sulfating agent in organic synthesis. This chemical is critical for introducing the propylsulfonyl functional group, enabling the production of specialized surfactants, pharmaceutical intermediates, and performance chemicals. It serves the needs of R&D laboratories and industrial-scale manufacturers in the agrochemical, pharmaceutical, and specialty chemical sectors seeking precise and efficient sulfonation reactions.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs requiring sulfonate ester functionalities.
• Agrochemical Synthesis: Used in the manufacture of herbicides, fungicides, and plant growth regulators where sulfonation enhances bioavailability or activity.
• Surfactant & Detergent Industry: Acts as a sulfonating agent in the production of anionic surfactants and specialty detergents.
• Polymer Modification: Employed to introduce sulfonate groups into polymers, altering properties like hydrophilicity, ion-exchange capacity, or dye affinity.
• Organic Synthesis Reagent: A valuable reagent in research and development for constructing complex molecules via sulfonylation reactions.
• Dye and Pigment Manufacturing: Facilitates the synthesis of sulfonated dyes, improving their solubility and application properties.

Basic Information

Item	Details
Product Name	Chlorosulfuric Acid Propyl Ester
CAS No.	819-52-3
Molecular Formula	C3H7ClO3S
Molecular Weight	158.60 g/mol
Synonyms	Propyl Chlorosulfonate; 1-Propyl Chlorosulfonate; Propylsulfonyl Chloride; NSC 406058; Chlorosulfonic Acid Propyl Ester; Propane-1-sulfonyl chloride; Sulfonic acid, monopropyl ester, chloride
EINECS	212-485-6

Quality Control

Our Chlorosulfuric Acid Propyl Ester is produced and tested under a strict quality management system. Each batch undergoes comprehensive analysis to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided, documenting key parameters such as assay, clarity, and impurity profiles to meet the exacting standards of our industrial and research partners.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases, amines, and oxidizing agents. Due to its hygroscopic and strong acid/organic solvent nature, containers must be kept sealed under a dry inert atmosphere to prevent moisture absorption and decomposition. Recommended storage temperature: 2-8°C.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/Titration)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Impurities (GC)	≤ 2.0% total
Density (at 20°C)	~1.30 g/mL

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