Chemical Properties
CLEAR COLOURLESS LIQUID
Occurrence
Reported found in bilberries, passion fruit and tea. Also reported found in apricot, bilberry, white wine, black
tea, green tea, microbial fermented tea, brewed tea, yellow passion fruit juice and dill herb.
Uses
2,2,6-Trimethylcyclohexanone is used as a flavoring agent. It is also used to prepare terpene viz. beta-ionone.
Aroma threshold values
Detection: 100 ppb; recognition: 310 ppb
Purification Methods
Purify it via the semicarbazone (m 218o, from MeOH or EtOH), decompose this in the usual way (cf p 65 and 67, or MEK, p 106) and fractionally distil the liquid ketone through a vigreux column (p 11) at ~760mm. [Chakravarti J Chem Soc 1567 1947, Milas et al. J Am Chem Soc 70 1831 1948, Beilstein 7 I 24, 7 II 32, 7 III 7.]
