heptanal oxime Chemical Properties

Melting point:

57.5℃

Boiling point:

195℃

Density 

0.88±0.1 g/cm3 (20 ºC 760 Torr)

refractive index 

1.58269 (23.2℃)

Flash point:

99.7±6.3℃

EPA Substance Registry System

Heptanal, oxime (629-31-2)

heptanal oxime Usage And Synthesis

Purification Methods

Separate the cis(Z) and trans(E) oximes by liquid chromatography through a silica gel column and eluting with pet ether (b 40-65o)/EtOAc (50:10) at a flow rate of 2-3.4mL/sec where the trans-isomer comes through first and is a liquid with n D 1.38512 followed by the cis-isomer which is a solid and crystallises from 60% aqueous EtOH with m 55o. They are identified by TLC on 0.2mm silica gel G by eluting with *C6H6/EtOAc (50/10) and visualizing with I2 vapour: the trans-isomer has RF 0.6 and the cis-isomer has RF 0.5 [Pejkovic-Tadic et al. J Chromatography 21 239 1966, Emmous & Pagano J Am Chem Soc 77 4557 1955]. [Beilstein 1 H 698, 1 I 358, 1 II 752, 1 III 2850.]

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