Description

Ethanesulfonic Acid, Pentafluoro-, Pentafluoroethyl Ester is a high-purity fluorinated sulfonic acid derivative, a key intermediate in advanced chemical synthesis. Its value lies in its unique perfluorinated structure, which imparts exceptional thermal stability, chemical resistance, and lipophilicity, making it a critical building block for performance materials. This compound is essential for R&D and production in the pharmaceutical, agrochemical, and specialty polymer industries, where its properties enable the development of novel, high-value products.

Application

• Pharmaceutical Intermediate: Serves as a key synthon for introducing the pentafluoroethanesulfonyl (PES) group, a valuable motif in active pharmaceutical ingredients (APIs) for its metabolic stability and bioavailability enhancement.
• Agrochemical Synthesis: Used in the manufacture of advanced herbicides and pesticides, where the fluorine content contributes to improved efficacy, photostability, and rainfastness.
• Polymer & Material Science: Acts as a monomer or modifier in the production of specialty fluoropolymers, imparting oil, water, and chemical resistance to coatings, membranes, and elastomers.
• Lithium-Ion Battery Electrolytes: Investigated as a potential high-performance additive or co-solvent in electrolyte formulations to improve battery cycle life and thermal stability.
• Catalyst & Ligand Preparation: Employed in the synthesis of novel superacid catalysts or as a precursor for specialized ligands used in organometallic chemistry and catalysis.
• Surface Modification Agent: Utilized to create low-surface-energy coatings for electronic components, textiles, and medical devices, providing water and stain repellency.

Basic Information

Product Name	Ethanesulfonic Acid, Pentafluoro-, Pentafluoroethyl Ester
CAS No.	77927-84-5
Molecular Formula	C4HF10O3S
Molecular Weight	280.10 g/mol
Synonyms	Pentafluoroethyl Pentafluoroethanesulfonate; Pentafluoroethanesulfonic Acid Pentafluoroethyl Ester; Perfluoroethyl Ethanesulfonate; 1,1,2,2,2-Pentafluoroethyl 1,1,2,2,2-pentafluoroethanesulfonate; Pentafluoroethyl Perfluoroethanesulfonate; PES Ester; F5C2SO2OC2F5; Ethanesulfonic acid, pentafluoro-, 1,1,2,2,2-pentafluoroethyl ester
EINECS	Contact for details

Quality Control

Our Ethanesulfonic Acid, Pentafluoro-, Pentafluoroethyl Ester is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chromatography (GC/HPLC) and spectroscopy (NMR, IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment. We support cGMP production for pharmaceutical applications and can tailor purity grades to meet specific project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This compound is sensitive to strong alkali and moisture; ensure the container is kept tightly sealed in a dry environment. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~1.7 g/mL
Refractive Index (n20D)	~1.31

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