Neopentane
Title: Neopentane
CAS Registry Number: 463-82-1
CAS Name: 2,2-Dimethylpropane
Additional Names: tetramethylmethane
Molecular Formula: C5H12
Molecular Weight: 72.15
Percent Composition: C 83.23%, H 16.76%
Literature References: Found in petr naphtha. Prepn from tert-butyl iodide and dimethylzinc: Lwow, Z. Chem. 1870, 520; cf. J. Am. Chem. Soc. 54, 3460 (1932); from butylmagnesium iodide and dimethyl sulfate in ether: Ferrario, Fagetti, Gaz. Chim. 38, II, 663 (1908); from amylene vapor and hydrogen in presence of an electric discharge: ibid. 62, 621 (1932); by passing pentanes over aluminum chloride at 140°, J. Gen. Chem. USSR 14, 343 (1944), C.A. 39, 3783 (1945); from neopentylmagnesium chloride and water: Whitmore et al., J. Am. Chem. Soc. 56, 749 (1934).
Properties: Liquid or gas. d00 0.613 (liq). Solidifies to form tetragonal crystals, mp -19.8°. bp 9.5°. Insol in water.
Melting point: mp -19.8°
Boiling point: bp 9.5°
Density: d00 0.613 (liq)

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