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2,3,3,3-Tetrafluoropropene, HFO-1234yf, is a hydrofluoroolefin (HFO) with molecular formula CH 2 =CFCF 3. Its primary application is as a refrigerant with low global warming potential (GWP). [1] [2] As a refrigerant, it is designated R-1234yf [1] and marketed under the names Opteon YF by Chemours and as Solstice YF by Honeywell. [3]
trans-1,3,3,3-Tetrafluoropropene (HFO-1234ze(E), R-1234ze(E)) is a hydrofluoroolefin. It was developed as a "fourth generation" refrigerant to replace fluids such as R-134a , as a blowing agent for foam and aerosol applications, and in air horns and gas dusters . [ 3 ]
cis-1,3,3,3-Tetrafluoropropene (HFO-1234ze(Z), R-1234ze(Z)) is a hydrofluoroolefin which has been considered for use as a refrigerant in high-temperature heat pumps.
Fluke purchased the testing and measurements division of Philips in 1993 for $41.8 million. [2] The Philips PM series of measurement instruments was rebranded as Fluke. Fluke was bought by the Danaher Corporation in 1998. Danaher spun off several subsidiaries, including Fluke, in 2016 to create Fortive. [3]
2,3,3,3-tetrafluoropropene (HFO-1234yf) This is a gaseous phase effluent from the decomposition of Teflon when laser cutting it. [1] References
C 3 H 2 F 4: Molar mass: 114.043 g·mol −1 Boiling point: −16 °C (3 °F; 257 K) [1] ... 1,3,3,3-Tetrafluoropropene is a hydrofluoroolefin which has two isomers:
It supports DIA-based profiling of PTMs, such as phosphorylation and ubiquitination, new technologies such as Scanning SWATH [36] and dia-PASEF, [37] and can perform library-free analyses (acts as a database search engine). [38] FlashLFQ Open source: FlashLFQ is an ultrafast label-free quantification algorithm for mass-spectrometry proteomics. [39]
A residual gas analyzer (RGA) is a small and usually rugged mass spectrometer, typically designed for process control and contamination monitoring in vacuum systems.When constructed as a quadrupole mass analyzer, there exist two implementations, utilizing either an open ion source (OIS) or a closed ion source (CIS).