# ISO 855:1981 — Withdrawn and superseded ISO standards For ISO 855:1981, item title is Oil of lemon, Italy, obtained by expression; status code is 9599; successor is ISO/CD 855 | ISO 855:2003; withdrawn / published date is 1981-09-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 855:1981 _(verified: appears in the quote below)_ - **Item title:** Oil of lemon, Italy, obtained by expression _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/CD 855 | ISO 855:2003 - **Withdrawn / published date:** 1981-09-01 _(verified: appears in the quote below)_ ## What the source says > 5231,IS,,ISO 855:1981,"Oil of lemon, Italy, obtained by expression","Huile essentielle de citron, Italie, obtenue par expression",1981-09-01,1,['71.100.60'],ISO/TC 54,9599,,"[5232,32042]","['en','fr']",2,"
The oil must be a mobile clear liquid which may become cloudy by lowering the temperature. The colour has to be pale yellow to pale greenish-yellow, the odour characteristic of fresh pericarp of lemon. The following characteristics shall not exceed the range indicated. Relative density at 20/20 °C: 0,849 - 0,858; refractive index at 20 °C: 1,4740 - 1,4760; optical rotation at 20 °C: + 57 to + 65 ; residue on evaporation: 1,6 - 3,9 %; acid value: maximum 3,0; carbonyl value: 11 - 17; CD v ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).