metyylipropaani

Metyylipropaani, also known as isobutaani, is a branched-chain alkane with the chemical formula C4H10. It is an isomer of n-butaani, meaning it has the same chemical formula but a different structural arrangement of atoms. In metyylipropaani, the carbon atoms are arranged in a branched structure with one central carbon atom bonded to three methyl groups and one hydrogen atom. This contrasts with n-butaani, where the carbon atoms are arranged in a straight chain.

Metyylipropaani is a colorless, flammable gas at room temperature and atmospheric pressure. It has a characteristic odor, though it is often mixed with a stronger odorant for leak detection purposes. Its boiling point is -11.7 degrees Celsius, which is lower than that of n-butaani (-0.5 degrees Celsius), a consequence of its branched structure leading to weaker intermolecular forces. Metyylipropaani is sparingly soluble in water but miscible with organic solvents.

It is commonly found in natural gas and petroleum refining processes. Metyylipropaani is used as a propellant in aerosol cans, a refrigerant, and a fuel, often blended with other hydrocarbons like propane and n-butaani in liquefied petroleum gas (LPG). Its branched structure can influence its combustion properties compared to its straight-chain isomer. In chemical synthesis, it can serve as a starting material for various organic compounds.