Ketine (Pyrazine)


CAS No. 123-32-0

Odour (decreasing): chocolate, cocoa, roasted-nuts, woody, slightly green-grass.

Solvent: DPG to form a 0.1% solution of ketine

Main Synonyms: 2,5-Dimethylpyrazine, 2,5-Dimethyl-1,4-diazine, Glycoline, Pyrazine

See below for more description



Description and usage notes:

As with all pyrazines this is used in traces – Ketine at 0.1% in DPG is pleasantly chocolatey, burnt and roasted.

According to Arctander the main use of this material was to scent the packets and enhance the flavour of potato crisps / chips.  It is also useful as part of a chocolate or coffee accord and other gourmand types.

It is present in the scent of coffee and chocolate but also some types of lavender, beer and pork. It also has a green-grass aspect that can add depth to green scents, in high dilution.


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