Trimethylborane

Trimethylborane (TMB) is a toxic, pyrophoric gas with the formula B(CH3)3 (which can also be written as Me3B, with Me representing methyl).

Trimethylborane
Names
Preferred IUPAC name
Trimethylborane
Other names
Trimethylborine
Trimethylboron
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.008.926
EC Number
  • 209-816-3
  • InChI=1S/C3H9B/c1-4(2)3/h1-3H3 Y
    Key: WXRGABKACDFXMG-UHFFFAOYSA-N Y
  • CB(C)C
Properties
C3H9B
Molar mass 55.92 g/mol
Appearance Colorless gas or liquid
Density 0.625 g/cm3 at −100 °C
Melting point −161.5 °C (−258.7 °F; 111.6 K)
Boiling point −20.2 °C (−4.4 °F; 253.0 K)
Slight, highly reactive
Structure
Δ
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Spontaneously flammable in air; causes burns
GHS labelling:
Danger
H220, H250, H280, H314
P210, P222, P260, P264, P280, P301+P330+P331, P302+P334, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P370+P378, P377, P381, P403, P405, P410+P403, P422, P501
Flash point Not applicable, pyrophoric gas
−40 °C (−40 °F; 233 K)
Safety data sheet (SDS) MSDS from Voltaix
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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