# ISO 4264:2007 — Withdrawn and superseded ISO standards For ISO 4264:2007, item title is Petroleum products — Calculation of cetane index of middle-distillate fuels by the four-variable equation; status code is 9599; successor is ISO 4264:2018; withdrawn / published date is 2007-08-06, recorded from its source on 2026-08-05. - **Identifier:** ISO 4264:2007 _(verified: appears in the quote below)_ - **Item title:** Petroleum products — Calculation of cetane index of middle-distillate fuels by the four-variable equation _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 4264:2018 - **Withdrawn / published date:** 2007-08-06 _(verified: appears in the quote below)_ ## What the source says > 45627,IS,,ISO 4264:2007,Petroleum products — Calculation of cetane index of middle-distillate fuels by the four-variable equation,Produits pétroliers — Calcul de l'indice de cétane des distillats moyens par équation à quatre variables,2007-08-06,2,['75.160.20'],ISO/TC 28,9599,[10105],[72764],"['en','fr']",7,"

ISO 4264:2007 describes a procedure for the calculation of the cetane index of middle-distillate fuels from petroleum-derived sources. The calculated value is termed the 'cetane index by four-variable equation'. Throughout the remaining text of ISO 4264:2007, the term 'cetane index' implies cetane index by four-variable equation.

ISO 4264:2007 is not applicable to fuels containi ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).