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Names | |||
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Preferred IUPAC name
Trimethylborane[1] | |||
Other names
Trimethylborine
Trimethylboron | |||
Identifiers | |||
3D model (JSmol)
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ChemSpider | |||
ECHA InfoCard | 100.008.926 | ||
EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |||
C3H9B | |||
Molar mass | 55.92 g/mol | ||
Appearance | Colorless gas or liquid | ||
Density | 0.625 g/cm3 at −100 °C[3] | ||
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
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Spontaneously flammable in air; causes burns | ||
GHS labelling: | |||
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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)[4] | |||
Safety data sheet (SDS) | MSDS from Voltaix | ||
Related compounds | |||
Related compounds
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Trimethylborane (TMB) is a toxic, pyrophoric gas with the formula B(CH3)3 (which can also be written as Me3B, with Me representing methyl).
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