Description

1H,1H,2H,2H-Perfluorooctanesulfonic Acid CAS NO 27619-97-2 is a specialized fluorinated sulfonic acid derivative, serving as a critical precursor and intermediate in advanced material synthesis. Its unique perfluorinated alkyl chain and strong acid functionality make it invaluable for imparting exceptional chemical resistance, hydrophobicity, and oleophobicity to surfaces and polymers. This high-purity intermediate is essential for R&D and production in industries such as electronics, specialty coatings, and high-performance surfactants, where precise molecular architecture is required.

Application

• Fluorinated Surfactant & Polymer Synthesis: A key building block for manufacturing high-performance, low-surface-tension surfactants and fluoropolymers.
• Surface Modification & Coatings: Used to create ultra-durable, water- and oil-repellent coatings for textiles, electronics, and industrial equipment.
• Lithography & Semiconductor Processing: Acts as a photoresist component and etching agent in the fabrication of microelectronic components.
• Catalyst & Reagent in Organic Synthesis: Employed as a strong acid catalyst or fluorinating reagent in specialized organic transformations.
• Firefighting Foam Formulations (Legacy/Precursor): Historically used in the synthesis of certain fluorosurfactants for aqueous film-forming foams (AFFF).
• Analytical Chemistry & Research: Serves as a standard or reagent in environmental and analytical testing for per- and polyfluoroalkyl substances (PFAS).

Basic Information

Product Name	1H,1H,2H,2H-Perfluorooctanesulfonic Acid
CAS No.	27619-97-2
Molecular Formula	C8H3F13O3S
Molecular Weight	450.15 g/mol
Synonyms	6:2 Fluorotelomer sulfonic acid; 1H,1H,2H,2H-Perfluorooctane-1-sulfonic acid; 6:2 FTSA; 6:2 Fluorotelomer sulfonate; Perfluorohexylethanesulfonic acid; FTSA-6:2; 2-Perfluorohexyl ethanesulfonic acid; 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7-tridecafluoro-
EINECS	Contact for details

Quality Control

Our production of 1H,1H,2H,2H-Perfluorooctanesulfonic Acid adheres to stringent quality management protocols. Every batch is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area. Due to its nature as a strong acid/organic solvent, it should be kept away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (NMR)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Density (at 20°C)	~1.7 g/mL

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