Description

Perfluorooctanesulfonic Acid (PFOS) is a fully fluorinated, eight-carbon sulfonic acid that serves as a key per- and polyfluoroalkyl substance (PFAS) and a critical industrial surfactant. Its unique chemical structure provides exceptional stability, surface activity, and resistance to heat, acids, and oils, making it a foundational material for creating durable, high-performance products. This compound is essential for manufacturers and R&D facilities in sectors requiring advanced material properties, such as industrial coatings, specialty polymers, and firefighting foams.

Application

• Historical Firefighting Foams (AFFF): A key component in aqueous film-forming foams (AFFF) for suppressing fuel-based fires, prized for its ability to form a vapor-sealing film.
• Surface Treatment & Coatings: Used to impart oil, water, and stain resistance to textiles, carpets, leather, and paper products.
• Performance Polymer Additive: Incorporated into fluoropolymers and other high-performance plastics to enhance chemical resistance and reduce surface energy.
• Industrial Surfactant: Acts as a wetting agent, leveling agent, and emulsifier in specialized industrial processes, including metal plating and etching.
• Chemical Intermediate: Serves as a precursor for synthesizing various perfluorinated compounds, including salts and derivatives used in diverse applications.
• Research & Analytical Standard: Utilized in environmental, toxicological, and analytical chemistry research as a reference standard for PFOS detection and quantification.
• Semiconductor Industry: Historically used in photolithography and etching processes for its surfactant properties.
• Insecticide Formulations: Previously used as an active ingredient or surfactant in certain insecticide products.

Basic Information

Product Name	Perfluorooctanesulfonic Acid
CAS No.	1763-23-1
Molecular Formula	C8HF17O3S
Molecular Weight	500.13 g/mol
Synonyms	PFOS; Heptadecafluorooctanesulfonic Acid; 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-Heptadecafluoro-1-octanesulfonic Acid; Perfluorooctylsulfonic Acid; FC-95; FOSA; Perfluoro-1-octanesulfonic Acid; PFOS Acid
EINECS	217-179-8

Quality Control

Our Perfluorooctanesulfonic Acid is produced and handled under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets precise specifications for research and industrial use. A detailed Certificate of Analysis (COA) is provided, documenting key parameters such as assay purity and impurity profiles. We adhere to relevant global chemical management frameworks, and material safety data is available in compliance with regulations like REACH.

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). Keep away from strong bases and incompatible materials. Due to its persistent nature, ensure containment to prevent environmental release.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 5.0%
Heavy Metals	≤ 20 ppm

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