Trifluoromethanesulfonic anhydride
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Trifluoromethanesulfonic anhydride, also known as triflic anhydride, is the chemical compound with the formula (CF3SO2)2O. It is the acid anhydride derived from triflic acid. This compound is a strong electrophile, useful for introducing the triflyl group, CF3SO2. Abbreviated Tf2O, triflic anhydride is the acid anhydride of the superacid triflic acid, CF3SO2OH.[2][3]
Quick Facts Names, Identifiers ...
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Names | |||
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Preferred IUPAC name
Trifluoromethanesulfonic anhydride | |||
Identifiers | |||
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3D model (JSmol) |
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ChEBI | |||
ChemSpider | |||
ECHA InfoCard | 100.006.016 | ||
EC Number |
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PubChem CID |
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Properties | |||
C2F6O5S2 | |||
Molar mass | 282.13 g·mol−1 | ||
Appearance | colourless liquid | ||
Density | 1.6770 g/mL | ||
Boiling point | 82[1] °C (180 °F; 355 K) | ||
Reacts to form Triflic acid | |||
Hazards | |||
GHS labelling: | |||
Danger | |||
H272, H302, H314, H335 | |||
NFPA 704 (fire diamond) | |||
Safety data sheet (SDS) | Fisher MSDS | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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