Perfluorooctanoic acid

Catalog NumberHG335671

CAS Number335-67-1

CategoryFluoro Surfactants

Synonyms

PFOA;Octanoic acid, pentadecafluoro-

Molecular Weight

414.07

Molecular Formula

C8HF15O2

Appearance

Solid

Application

Use as emulsifying agent, dispersing agent.; Use as cleansingagent.; Use as spreading agent, wetting agent.

Active Content

90%

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Case Study

Perfluorooctanoic Acid as a Target Contaminant for Ultrasonic Degradation in Aqueous Media

Lin, Jo-Chen, et al. Ultrasonics sonochemistry 28 (2016): 130-135.

Perfluorooctanoic acid (PFOA) acts as a target contaminant for ultrasonic degradation enhanced by surfactant addition.
Experimental Protocol: Aqueous solutions containing PFOA at initial concentrations of 10-50 mg/L are treated with ultrasonic irradiation at 20 kHz frequency and 200 W power. Cetyltrimethylammonium bromide (CTAB) is added at 0.12 mM as a cationic surfactant. The solution temperature is maintained at 25°C. Samples are collected at regular intervals over 120 min of sonication.
Performance Evaluation: The addition of 0.12 mM CTAB enhances the PFOA degradation efficiency to 79% within 120 min of ultrasonic treatment. The degradation follows pseudo-first-order kinetics with improved rate constants compared to surfactant-free conditions. The synergistic effect of ultrasonic cavitation and surfactant micellization facilitates PFOA decomposition. This approach demonstrates an effective strategy for treating PFOA-contaminated water.

Perfluorooctanoic Acid as a Target Contaminant for Ion Exchange Resin Removal

Dixit, Fuhar, et al. Environmental Science: Water Research & Technology 5.10 (2019): 1782-1795.

Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) serve as target contaminants for removal by anion exchange resin.
Experimental Protocol: Batch adsorption experiments are conducted using a strong-base anion exchange resin at a dosage of 1000 mg/L. Aqueous solutions containing PFOA and PFOS at environmentally relevant concentrations (10-1000 ng/L) are prepared. The suspensions are stirred at 150 rpm at 25°C for 24 h to reach equilibrium. The dissolved organic carbon (DOC) and PFAS concentrations are measured by liquid chromatography-tandem mass spectrometry.
Performance Evaluation: The resin achieves >60% DOC removal from the contaminated water. Effluent PFAS concentrations are reduced to below 70 ng/L, meeting stringent regulatory limits. The ion exchange process demonstrates high selectivity for perfluorinated compounds over natural organic matter. The resin shows sustained performance over multiple treatment cycles, confirming its suitability for drinking water treatment applications.

• Synonyms: PFOA;Octanoic acid, pentadecafluoro-
• Molecular Weight: 414.07
• Molecular Formula: C8HF15O2
• Appearance: Solid
• Application: Use as emulsifying agent, dispersing agent.; Use as cleansingagent.; Use as spreading agent, wetting agent.
• Active Content: 90%