335-57-9 | Hexadecafluoroheptane

CAS:335-57-9 | Hexadecafluoroheptane,Description

Synthesis Analysis

Perfluoroheptane can be synthesized through several methods, including the electrochemical fluorination of heptane or its derivatives and the cobalt-catalyzed fluorination of heptane. These methods aim to replace all hydrogen atoms in the heptane molecule with fluorine atoms, resulting in perfluoroheptane with a fully fluorinated carbon backbone. The synthesis methods vary in efficiency, selectivity, and environmental impact, with recent research focusing on more sustainable and efficient fluorination techniques.

Molecular Structure Analysis

The molecular structure of perfluoroheptane has been extensively studied using computational and experimental techniques. Studies show that perfluoroheptane and similar perfluoroalkanes adopt a helical conformation, with the dihedral angle leading to helical structures ranging from approximately 46° at the ends of the molecules to approximately 49° near the centers of the molecular chains (Golden et al., 2008). This helical conformation is in contrast to the fully staggered, zig-zag structure observed in hydrocarbons, indicating a significant influence of the fluorine atoms on the molecular geometry.

Scientific Research Applications

Application 1: Deacidification of Paper

• Summary of the Application : Perfluoroheptane is used in the deacidification of paper as a medium carrying powdered magnesium oxide. This application is particularly important for the preservation of historical documents and books, which can degrade over time due to the acidity of the paper.
• Methods of Application or Experimental Procedures : A system of liquid carriers consisting of perfluoroheptane, isopropanol, and water (PFH-IPA-H2O) was chosen to apply hydrotalcites (HTlcs) as deacidifying agents on paper. The areas of miscibility and immiscibility in the PFH-IPA-H2O system were determined at a temperature of 25 °C. The properties of HTlcs dispersed in the prepared solvent were measured, and the size of the particles was determined by optical microscopy with image analysis.
• Results or Outcomes : The average particle size ranges from 1 µm to 2 µm. The settling speed of particles in the prepared colloidal systems was monitored using turbidimetry. Sols in the mixture of solvents had uniformly dispersed particles that settled slowly. The effect of the prepared colloidal HTlcs dispersions on the properties of the paper, specifically the pH of its surface, was also tested.

Application 2: Dispersant for Lubricants, Mold Release Agents, Protective Coatings

• Summary of the Application : Perfluoroheptane is used as a dispersant in the formulation of lubricants, mold release agents, and protective coatings. This helps to improve the performance and efficiency of these products.
• Results or Outcomes : The use of perfluoroheptane as a dispersant can enhance the properties of the final product, such as its lubricity, release characteristics, or protective qualities.

Application 3: Reaction Media for Polymerizations, Purification, Separation Processes

• Summary of the Application : Perfluoroheptane can be used as a reaction medium in polymerization processes, as well as in purification and separation processes. This can help to control the reaction conditions and improve the efficiency of these processes.
• Results or Outcomes : The use of perfluoroheptane in these applications can lead to more efficient reactions and improved product quality.

Application 4: Solvent for Removal of Halogenated Lubricants, Oils, Greases

• Summary of the Application : Perfluoroheptane is used as a solvent for the removal of halogenated lubricants, oils, and greases. This makes it useful in industrial cleaning applications.
• Results or Outcomes : The use of perfluoroheptane as a solvent can result in effective and efficient cleaning of industrial equipment and surfaces.

Application 5: Carrier for Halogenated Material

• Summary of the Application : Perfluoroheptane is used as a carrier for halogenated material. This application is particularly useful in industries where halogenated materials need to be transported or applied in a controlled manner.
• Results or Outcomes : The use of perfluoroheptane as a carrier can enhance the efficiency of industrial processes involving halogenated materials.

Application 6: Liquid Marble Formation

• Summary of the Application : Perfluoroheptane can be used to create liquid marbles, which are liquid droplets coated with hydrophobic powder that can be manipulated like solid objects while maintaining the properties of a liquid.
• Results or Outcomes : Liquid marbles have a wide range of potential applications, including as microreactors, in digital microfluidics, and in the creation of smart materials.

Safety And Hazards

While specific safety and hazard information for Perfluoroheptane is not provided in the search results, it is generally recommended to ensure adequate ventilation when handling it, avoid contact with skin, eyes, or clothing, and avoid ingestion and inhalation.

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