Formula: B2H6

Diborane is a colorless, flammable, toxic gas.

Submit your details and one of our agents will contact you.


Applications of diborane include the following:

  • Used as a catalyst for ethylenic, styrene, acrylic, and vinyl polymerization
  • A reducing agent
  • Flamespeed accelerator
  • Intermediate for preparation of boron hydrides of higher molecular weight



Grade 4
Purity 99.99%
Oxygen  < 1 ppmv
Nitrogen  < 10 ppmv
Carbon Dioxide  < 5 ppmv
Methane  < 5 ppmv
Hydrogen  < 500 ppmv
Boron Trifluoride  < 50 ppmv
B5H9  < 10 ppmv
B4H10  < 180 ppmv
B5H11  < 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 27.68
Specific Volume 5 cu.ft/lb
Valve Outlet CGA 350
DISS 632


Shipping Information
DOT Name Diborane, Compressed
Hazard Class 2.3
DOT No. UN 1911
DOT Label Inhalation Hazard/Flammable Gas
CAS No. 19287-45-7


Cylinder Size Fill Volume (L)
Size 200 43.8
Size 35 7.3

*This gas not available for purchase online.