White to pale yellow crystalline powder
2-Azacyclononanone has been used as an internal standard liquid chromatography-ultraviolet detection method for the determination of caprolactam in the aqueous food stimulant 3% acetic acid (w/v).
2-Azacyclononanone forms complexes with hydrated lanthanides trifluoroacetate in ethanol. It reacts with mercury(II)acetate and erbium(III)nitrate in methanol to yield the heterocyclic complex .
Dissolve it in CHCl3, decolorise it with charcoal, evaporate to dryness and recrystallise it from CHCl3/hexane. Sublime it at high vacuum. The oxime has m 117o (from *C6H6 or pet ether). [Guggisberg Helv Chim Acta 61 1050 1978, Olah et al. Synthesis 538 1979, Behringer & Meier Justus Liebigs Ann Chem 607 67 1957, Beilstein 21 III/V 3260.]
