Overview
Perfluorohexanoic Acid (PFHxA) is a fluorosurfactant belonging to the class of perfluorinated carboxylic acids (PFCAs). It is widely used in industrial applications due to its unique chemical stability and surfactant properties. PFHxA is part of the broader group of per- and polyfluoroalkyl substances (PFAS), which are known for their resistance to heat, water, and oil. While PFHxA is less persistent than longer-chain PFCAs like PFOA or PFOS, it still requires careful handling due to potential environmental and health concerns. Regulatory scrutiny on PFAS compounds has increased, making compliance with local and international regulations a key consideration for industrial users.
Physical and Chemical Properties
PFHxA is a colorless to pale yellow liquid with a molecular weight of 314.05 g/mol. It has a high density of approximately 1.76 g/cm³ and a boiling point between 180–190 °C. The compound is soluble in organic solvents like ethanol and acetone but exhibits low solubility in water. Its chemical structure, featuring a perfluorinated carbon chain (C6F11) and a carboxylic acid group (COOH), contributes to its thermal and chemical stability. These properties make PFHxA useful in applications requiring resistance to harsh conditions, such as high temperatures or corrosive environments.
Main Applications
PFHxA is primarily used as a surfactant in industrial coatings, firefighting foams, and specialty chemicals. Its ability to reduce surface tension makes it valuable in formulations for water- and oil-repellent coatings. Additionally, it serves as an intermediate in the production of fluoropolymers, which are used in non-stick cookware, electrical insulation, and medical devices. In recent years, the use of PFHxA in firefighting foams has declined due to environmental concerns. However, it remains a key component in niche applications where alternative surfactants cannot match its performance.
Safety and Storage
PFHxA should be handled with personal protective equipment (PPE), including gloves, goggles, and respirators, to prevent exposure. Inhalation or skin contact may cause irritation, and ingestion can be harmful. The compound should be stored in a cool, dry, well-ventilated area, away from oxidizing agents and incompatible materials. Environmental precautions are critical, as PFHxA can persist in water and soil. Disposal must comply with local regulations to prevent contamination. Manufacturers and users should monitor evolving regulatory guidelines, particularly those targeting PFAS compounds.
B2B Procurement Guide
When procuring PFHxA, buyers should verify the CAS number (307-24-4) and request certificates of analysis to confirm purity and quality. Prices typically range from $50 to $200 per kg, with bulk orders often eligible for discounts. Reputable suppliers should provide safety data sheets (SDS) and compliance documentation. Due to regulatory pressures, some manufacturers are shifting to shorter-chain PFAS alternatives. Buyers should assess whether PFHxA is necessary for their applications or if substitutes like perfluorobutanoic acid (PFBA) could meet their needs while reducing regulatory risks.
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