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2. Polytetrafluoroethylene - Wikipedia

   en.wikipedia.org/wiki/Polytetrafluoroethylene

   Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene, and has numerous applications because it is chemically inert. [3] The commonly known brand name of PTFE-based composition is Teflon by Chemours , [ 4 ] a spin-off from DuPont , which originally discovered the compound in 1938. [ 4 ]

3. Are Christmas trees toxic to cats? How to cat-proof ... - AOL

   www.aol.com/christmas-trees-toxic-cats-cat...

   Cats are known to climb on furniture and other decor, so here are some tips to cat-proof your tree this holiday season. Make sure your Christmas tree has a heavy base, Purina recommends .

4. Per- and polyfluoroalkyl substances - Wikipedia

   en.wikipedia.org/wiki/Per-_and_polyfluoroalkyl...

   The EPA issued health advisories for four specific PFASs in June 2022, significantly lowering their safe threshold levels for drinking water. PFOA was reduced from 70 ppt to 0.004 ppt, while PFOS was reduced from 70 ppt to 0.02 ppt. A safe level for the compound GenX was set at 10 ppt, while that for PFBS was set at 2000 ppt. While not ...

5. Fluoropolymer - Wikipedia

   en.wikipedia.org/wiki/Fluoropolymer

   In 1938, polytetrafluoroethylene (DuPont brand name Teflon) was discovered by accident by a recently hired DuPont Ph.D., Roy J. Plunkett. While working with tetrafluoroethylene gas to develop refrigerants, he noticed that a previously pressurized cylinder had no pressure remaining. In dissecting the cylinder, he found a mass of white solid in a ...

6. Plants and flowers safe for cats: A full list - AOL

   www.aol.com/plants-flowers-safe-cats-full...

   Many flowers and plants deemed safe for humans are toxic for cats, according to the American Society for the Prevention of Cruelty to Animals (ASPCA). So, before you buy flowers for your next big ...

7. Owner Reveals Christmas Tree Hack That Will Make It Cat-Safe

   www.aol.com/lifestyle/owner-reveals-christmas...

   A video of a cat owner showing how to make a cat-safe Christmas tree for their feline garnered a lot of attention on the internet. A TikTok user under the handle @mooseyandmillie posted the video ...

8. Tetrafluoroethylene - Wikipedia

   en.wikipedia.org/wiki/Tetrafluoroethylene

   A convenient, safe method for generating TFE is the pyrolysis of the sodium salt of pentafluoropropionic acid: [6]. C 2 F 5 CO 2 Na → C 2 F 4 + CO 2 + NaF. The depolymerization reaction – vacuum pyrolysis of PTFE at 650–700 °C (1,200–1,290 °F) in a quartz vessel – is a traditional laboratory synthesis of TFE.

9. Materials for use in vacuum - Wikipedia

   en.wikipedia.org/wiki/Materials_for_use_in_vacuum

   Polytetrafluoroethylene (PTFE or Teflon) is commonly used inside of vacuum systems. It is self-lubricating, a good electrical insulator, tolerant to fairly high temperatures, and has low out-gassing. It is not suitable for barrier between vacuum and atmosphere, as it is somewhat permeable for gases.