# ISO 587:1981 — Withdrawn and superseded ISO standards For ISO 587:1981, item title is Solid mineral fuels — Determination of chlorine using Eschka mixture; status code is 9599; successor is ISO 587:1997; withdrawn / published date is 1981-11-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 587:1981 _(verified: appears in the quote below)_ - **Item title:** Solid mineral fuels — Determination of chlorine using Eschka mixture _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 587:1997 - **Withdrawn / published date:** 1981-11-01 _(verified: appears in the quote below)_ ## What the source says > 4685,IS,,ISO 587:1981,Solid mineral fuels — Determination of chlorine using Eschka mixture,Combustibles minéraux solides — Dosage du chlore au moyen du mélange Eschka,1981-11-01,2,['75.160.10'],ISO/TC 27/SC 5,9599,,[2756],"['en','fr']",3, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).