| Sodium tetrafluoroborate | |
|---|---|
|
Other names
sodium fluoroborate, NaBF4 |
|
| Identifiers | |
| CAS number | 13755-29-8 |
| Properties | |
| Molecular formula | NaBF4 |
| Molar mass | 109.79 |
| Melting point |
384 °C |
| Related compounds | |
| Other cations | Nitrosonium tetrafluoroborate |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
|
| Infobox references | |
Sodium tetrafluoroborate, also called sodium borofluoride, is a compound with formula NaBF4. It forms colorless water-soluble rhombic crystals and is soluble in water (108 g/100 ml) and less soluble in organic solvents.[1]
It is a source of tetrafluoroborate anion. It is used in organic chemistry for fluorination reactions and as a catalyst, and for lab-scale preparation of boron trifluoride.
Sodium tetrafluoroborate is used in some fluxes used for brazing.
Sodium tetrafluoroborate can be prepared by neutralizing tetrafluoroboric acid with sodium carbonate or sodium hydroxide. [2]
Sodium tetrafluoroborate can be used to prepare nitrosonium tetrafluoroborate, an explosive, by reacting with nitrogen(III) oxide.[3]
On heating, sodium tetrafluoroborate decomposes to sodium fluoride and boron trifluoride.[4]
Sodium tetrafluoroborate can be used for synthesis of ionic liquids, where the tetrafluoroborate often plays the role of the product's anion.