Difluorophosphoric acid
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IUPAC name
difluorophosphinic acid
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Identifiers | |
3D model (JSmol)
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ECHA InfoCard | 100.034.005 |
EC Number |
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PubChem CID
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UN number | 1768 |
CompTox Dashboard (EPA)
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Properties | |
F2HO2P | |
Molar mass | 101.977 g·mol−1 |
Appearance | colorless liquid |
Density | 1.583 g/mL |
Hazards | |
GHS labelling: | |
Signal word
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Danger |
H314 | |
P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Infobox references | |
Difluorophosphoric acid is an inorganic compound with the formula HPO2F2. It is a colorless liquid. The acid has limited applications, in part because it is thermally and hydrolytically unstable.[1]
It is prepared by hydrolysis of phosphorus oxyfluoride:
- POF3 + H2O → HPO2F2 + HF
Further hydrolysis gives monofluorophosphoric acid:
- HPO2F2 + H2O → H2PO3F + HF
Complete hydrolysis gives phosphoric acid:
- H2PO3F + H2O → H3PO4 + HF
The salts of difluorophosphoric acid are known as difluorophosphates.
References[]
- ^ Charles B. Lindahl, Tariq Mahmood (2000). "Fluorine Compounds, Inorganic, Phosphorus". Kirk‐Othmer Encyclopedia of Chemical Technology. doi:10.1002/0471238961.1608151912091404.a01. ISBN 0471238961.CS1 maint: uses authors parameter (link)
Categories:
- Inorganic compound stubs
- Oxohalides
- Phosphorus halides
- Fluoro complexes