Trimethylborane

Trimethylborane
Names
	Preferred IUPAC name Trimethylborane
	Other names Trimethylborine; Trimethylboron
Identifiers
CAS Number	593-90-8;
3D model (JSmol)	Interactive image;
ChemSpider	62201 ;
ECHA InfoCard	100.008.926
EC Number	209-816-3;
PubChem CID	68979;
CompTox Dashboard (EPA)	DTXSID90208038 ;
	InChI InChI=1S/C3H9B/c1-4(2)3/h1-3H3 Key: WXRGABKACDFXMG-UHFFFAOYSA-N ;
	SMILES CB(C)C;
Properties
Chemical formula	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)
Solubility in water	Slight, highly reactive
Structure
Molecular shape	Δ
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Spontaneously flammable in air; causes burns
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H220, H250, H280, H314
Precautionary statements	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
Autoignition; temperature	−40 °C (−40 °F; 233 K)
Safety data sheet (SDS)	MSDS from Voltaix
Related compounds
Related compounds	Triethylborane; Diborane; Methylborane;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

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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