Boron Trifluoride

CAS RN:7637-07-2

Major Uses

A catalyst in organic synthesis, boron trifluoride is used in soldering fluxes, for neutron measurement and as a fumigant. Boron trifluoride is also used to protect molten magnesium and its alloys from oxidation.
The most important uses are in organic syntheses. Boron trifluoride is commonly used as a catalyst for Friedel-Crafts alkylation reactions. It also is used to catalyze the cleavage of ethers to alcohols, to catalyze esterification reactions, and in the nitration and sulfonation of aromatic compounds. Many olefin polymerization reactions use BF3 as an initiator, in conjunction with a proton donor, such as water. Also BF3 is used to catalyze the isomerization of alkenes and alkanes and in petroleum cracking and desulfurization. Amine complexes of BF3 are used as epoxy curing agents.
To protect molten magnesium and its alloys from oxidation; as a flux for soldering magnesium; as a fumigant; in ionization chambers for the detection of weak neutrons.
Production of diborane, instruments for measuring neutron intensity, ... gas brazing.
Boron-10 enrichment; production of neutron absorbing salts for molten-salt breeder reactors; magnesium industry uses the fire retardant and anti-oxidant properties in casting and heat treating.
Used by electronics industry for: treating of separators for electrochemical high temperature cells; preparing high breakdown voltage varistors; enhancing surface conductivity of perylene
Find more information on this substance at: Hazardous Substances Data Bank , TOXNET , PubMed