Boron trifluoride

Boron trifluoride Identifiers InChI InChI=1/BF3/c2-1(3)4 InChIKey WTEOIRVLGSZEPR-UHFFFAOYAW Standard InChI InChI=1S/BF3/c2-1(3)4 Standard InChIKey WTEOIRVLGSZEPR-UHFFFAOYSA-N CAS number [7637-07-2] EC number 231-569-5 UN number 1008 RTECS ED2275000 ChemSpider 6116 Properties Chemical formula BF3 Molar mass 67.806 g mol−1 Appearance colourless gas Density 27.6 g dm−3 Melting point −126.8 °C Boiling point −100.3 °C Critical point −12.3 °C Solubility in water reacts violently Hazards Material safety data sheet (MSDS) ICSC 0231 EU index number 005-001-00-X GHS pictograms GHS signal word DANGER GHS hazard statements H330, H314 Flash point non-flammable PEL (U.S.) 1 ppm ceiling (3 mg m−3) Related compounds Other compounds Boron trichloride Boron tribromide Boron triiodide Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Boron trifluoride dihydrate IUPAC name boron trifluoride — water (1:2) Identifiers InChI InChI=1/BF3.2H2O/c2-1(3)4;;/h;2*1H2 CAS number [13319-75-0] UN number 2851 RTECS ED2275000 ChemSpider 55500 Properties Chemical formula BF3·2H2O Molar mass 103.84 g mol−1 Appearance colourless liquid Density 1.6316 g cm−3 Melting point 6 °C Solubility in water reacts Refractive index (nD) 1.3150 Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Boron trifluoride, BF₃, is a colourless, toxic gas. It is used as a strong Lewis acid in organic synthesis, either as the gas or (more usually) as an adduct with a weak Lewis base such as diethyl ether or dimethyl sulfide.

External links

• Preparations from Organic Syntheses in which boron trifluoride etherate appears