ISO-3794 › Essential oils (containing tertiary alcohols) -- Estimation of free alcohols content by determination of ester value after acetylation

ISO-3794 - 1ST EDITION - CURRENT


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The estimation is carried out by acetylation of the essential oil by acetyl chloride and acetic anhydride, in the presence of dimethylaniline. The acetylated oil is isolated and dried and the ester value is determined. The free alcohols content is calculated taking into account the ester values of the same but non-acetylated essential oil. This method is applicable to essential oils containing an appreciable proportion of tertiary alcohols, namely of linalol and terpineol. It is not applicable to essential oils containing appreciable proportions of phenols, anthranilates, lactones and aldehydes.

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71.100.60 (Essential oils)

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Document Number

ISO 3794:1976

Revision Level

1ST EDITION

Status

Current

Publication Date

Dec. 15, 1976

Committee Number

ISO TC 54