1-Bromobutane

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1-Bromobutane
Chemical name	1-Bromobutane
Other names	Butyl bromide
Chemical formula	C4H9Br
Molecular mass	137.02 g/mol
CAS number	[109-65-9]
Density	1.2686 g/cm³
Melting point	-112 °C
Boiling point	101.3 °C
SMILES	CCCCBr
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1-Bromobutane (CH₃(CH₂)₂CH₂Br) is a polar molecule. It is a colorless liquid that is insoluble in water, but soluble in ethanol and diethyl ether. As a primary alkyl halide, it is especially prone to S_N2 type reactions. It is commonly used as an alkylating agent, or in combination with magnesium metal in dry ether (Grignard reagent) to form carbon-carbon bonds. It is also used to form other organometallic compounds, such as butyllithium.

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