Formula: BF3

Boron Trifluoride is a colorless, toxic gas. It is shipped as a compressed gas.

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Applications of boron trifluoride include the following:

  • Used as a catalyst in isomerization, alkylation, polymerization, esterification, condensation, cyclization, hydration, dehydration, sulfonation, desulfurization, nitration, halogenation, oxidation, and acylation
  • To prepare boranes (such as diborane)
  • To protect molten magnesium and its alloys from oxidation during casting
  • As a flux for soldering magnesium
  • In fumigation



Grade 4.5
Purity 99.995%
Oxygen+Nitrogen+Argon  < 10 ppmv
Carbon Dioxide  < 10 ppmv
Sulfur Dioxide  < 10 ppmv

**Moisture level guaranteed only when Electronic Fluorocarbons prepares the cylinders.
All concentrations are on a mol/mol basis unless otherwise stated.
Product sold on the basis of total impurities. Individual impurities may vary slightly.

Chemical & Physical Properties
Molecular Weight 67.81
Sp.Volume 5.6 cu.ft/lb
Pressure @ 70°F 700/400
Valve Outlet CGA 330
DISS 642


Shipping Information
DOT Name

Boron Trifluoride, Compressed

Hazard Class 2.3
DOT No. UN 1008
DOT Label Poison Gas/Inhalation Hazard
CAS No. 7637-07-02


Cylinder Size Fill Weight (lbs)
 2L/Size 10 0.88
 2L/Size 10 0.39
 LB 0.077

*This gas not available for purchase online.