# ISO 4735:1981 — Withdrawn and superseded ISO standards

For ISO 4735:1981, item title is Oils of citrus — Determination of CD value by ultraviolet spectrophotometric analysis; status code is 9599; successor is ISO 4735:2002; withdrawn / published date is 1981-10-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4735:1981 _(verified: appears in the quote below)_
- **Item title:** Oils of citrus — Determination of CD value by ultraviolet spectrophotometric analysis _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4735:2002
- **Withdrawn / published date:** 1981-10-01 _(verified: appears in the quote below)_

## What the source says

> 10723,IS,,ISO 4735:1981,Oils of citrus — Determination of CD value by ultraviolet spectrophotometric analysis,Huiles essentielles de citrus — Détermination de la valeur CD par analyse spectrophotométrique dans l'ultraviolet,1981-10-01,1,['71.100.60'],ISO/TC 54,9599,,[34880],"['en','fr']",3,"<p>The absorbance curve of an ethanolic solution of the oil in the wavelength range from 220 to 440 nm is plotted and from this the CD value is determined. The CD value is the measure of segment CD, expressed in absorbance units for the exact mass of test portion specified in the International Standard appropriate to the essential oil concerned. The determination of segment CD is described in detail.</p>"

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).