# ISO 4317:1991 — Withdrawn and superseded ISO standards For ISO 4317:1991, item title is Surface-active agents and detergents — Determination of water content — Karl Fischer method; status code is 9599; successor is ISO/WD 4317 | ISO 4317:2011; withdrawn / published date is 1991-08-08, recorded from its source on 2026-08-05. - **Identifier:** ISO 4317:1991 _(verified: appears in the quote below)_ - **Item title:** Surface-active agents and detergents — Determination of water content — Karl Fischer method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/WD 4317 | ISO 4317:2011 - **Withdrawn / published date:** 1991-08-08 _(verified: appears in the quote below)_ ## What the source says > 10187,IS,,ISO 4317:1991,Surface-active agents and detergents — Determination of water content — Karl Fischer method,Agents de surface et détergents — Détermination de la teneur en eau — Méthode de Karl Fischer,1991-08-08,2,['71.100.40'],ISO/TC 91,9599,[10186],"[28258,55762]","['en','fr']",6,"
Specifies a method using Karl Fischer reagent for the determination. The method is applicable to products in the form of powders, pastes, and solutions. This second edition cancels and replaces the first edition (1977). Annexes A and B are for information only.
" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).