Title: 2-Pyrazoline
CAS Registry Number: 109-98-8
CAS Name: 4,5-Dihydro-1H-pyrazole
Molecular Formula: C3H6N2
Molecular Weight: 70.09
Percent Composition: C 51.41%, H 8.63%, N 39.97%
Literature References: Prepn from ethylene and diazomethane: Azzarello, Atti Accad. Lincei [5] 14, II, 285 (1905).
Properties: Liquid. Faint amine odor. An odor resembling chocolate has been detected in some prepns. d417 1.0200. bp760 144°. Volatile with steam. n58717.2 1.4796. Miscible with water, alc.
Boiling point: bp760 144°
Index of refraction: n58717.2 1.4796
Density: d417 1.0200

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