Trimethylene Bromide
Structural Formula Vector Image
Title: Trimethylene Bromide
CAS Registry Number: 109-64-8
CAS Name: 1,3-Dibromopropane
Additional Names: a,g-dibromopropane; w,-dibromopropane; trimethylene dibromide
Molecular Formula: C3H6Br2
Molecular Weight: 201.89
Percent Composition: C 17.85%, H 3.00%, Br 79.16%
Line Formula: BrCH2CH2CH2Br
Literature References: Prepd by the action of hydrobromic acid on trimethylene glycol in the presence of sulfuric acid: Kamm, Marvel, Org. Synth. coll. vol. I, p 30 (1941); cf. Derick, Hess, J. Am. Chem. Soc. 40, 545 (1918); Norris, Mulliken, ibid. 42, 2096 (1920): Kamm, Newcomb, ibid. 43, 2229 (1921). From trimethylene glycol and PBr3: Bogert, Slocum, ibid. 46, 765 (1924).
Properties: Colorless liquid; d425 1.9712; bp760 167° (mp -36°); nD15 1.5249. Slightly sol in water (1.68 g/l at 30°); sol in alc, ether. Upon prolonged heating trimethylene bromide dec and part of it is converted to propylene bromide (1,2-dibromopropane). Boiling with water yields trimethylene glycol.
Melting point: mp -36°
Boiling point: bp760 167°
Index of refraction: nD15 1.5249
Density: d425 1.9712

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