# Commission Regulation (EEC) No 2568/91 of 11 July 1991 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis, Division 4.2.1

Extent: E+W+S+N.I.

Petroleum ether 40-60 °C chromatographic grade or hexane. Hexane may be replaced by iso-octane (2,2,4-trimethyl pentane in chromatography grade), provided that comparable precision values are achieved. Solvents with higher boiling point than n-hexane take longer to evaporate. However, they are preferred due to the toxicity of hexane.

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Source: https://www.legislation.gov.uk/eur/1991/2568/annex/XVIII/division/4/division/4.2/division/4.2.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-1991-2568/annex-XVIII/division-4/division-4.2/division-4.2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.