Triethyloxonium tetrafluoroborate

Triethyloxonium tetrafluoroborate
Names
	IUPAC name Triethyloxonium tetrafluoroborate
Identifiers
CAS Number	368-39-8 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	3598090
ChemSpider	2006158 ;
ECHA InfoCard	100.006.096
PubChem CID	2723982;
UNII	Z0B19DD36J ;
UN number	3261
CompTox Dashboard (EPA)	DTXSID20883372 ;
	InChI InChI=1S/C6H15O.BF4/c1-4-7(5-2)6-3;2-1(3,4)5/h4-6H2,1-3H3;/q+1;-1 Key: IYDQMLLDOVRSJJ-UHFFFAOYSA-N ;
	SMILES F[B-](F)(F)F.CC[O+](CC)CC;
Properties
Chemical formula	[(CH3CH2)3O]+[BF4]−
Molar mass	189.99 g·mol−1
Melting point	91 to 92 °C (196 to 198 °F; 364 to 365 K)
Solubility in water	Reacts
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314
Precautionary statements	P260, P280, P303+P361+P353, P304+P340+P310, P305+P351+P338, P310, P363
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Triethyloxonium tetrafluoroborate is the organic oxonium compound with the formula [(CH₃CH₂)₃O]⁺[BF₄]⁻. It is often called Meerwein's reagent or Meerwein's salt after its discoverer Hans Meerwein. Also well known and commercially available is the related trimethyloxonium tetrafluoroborate. The compounds are white solids that dissolve in polar organic solvents. They are strong alkylating agents. Aside from the BF−4 salt, many related derivatives are available.