Title: Diphenylmethane
CAS Registry Number: 101-81-5
CAS Name: 1,1¢-Methylenebis[benzene]
Additional Names: benzylbenzene; ditan
Molecular Formula: C13H12
Molecular Weight: 168.23
Percent Composition: C 92.81%, H 7.19%
Line Formula: (C6H5)2CH2
Literature References: Prepd from methylene chloride and benzene with aluminum chloride as catalyst: Friedel, Crafts, Bull. Soc. Chim. [2] 41, 324 (1884); from benzyl chloride and benzene: Hartman, Phillips, Org. Synth. 14, 34 (1934); L. F. Fieser, Experiments in Organic Chemistry (Boston, 3rd ed., 1955) p 157.
Properties: Orthorhombic needles. Odor of oranges. d410 1.3421 (solid). mp 25.9°. d426 1.0008 (liq). bp760 264.5°; bp400 237.5°; bp200 210.7°; bp100 186.3°; bp60 170.2°; bp40 157.8°; bp20 139.8°; bp10 122.8°; bp5 107.4°; bp1.0 76.0°. nD20 1.57683. Absorption spectrum in hexane: Castille, Bull. Soc. Chim. Belg. 36, 296; Chem. Zentralbl. 1927, I, 1126; in alcohol: Ondorff, J. Am. Chem. Soc. 49, 1541 (1927). Freely sol in alcohol, ether, chloroform, hexane, benzene. Insol in liq ammonia.
Melting point: mp 25.9°
Boiling point: bp760 264.5°; bp400 237.5°; bp200 210.7°; bp100 186.3°; bp60 170.2°; bp40 157.8°; bp20 139.8°; bp10 122.8°; bp5 107.4°; bp1.0 76.0°
Index of refraction: nD20 1.57683
Density: d410 1.3421 (solid); d426 1.0008 (liq) |