# ISO 3841:1977 — Withdrawn and superseded ISO standards For ISO 3841:1977, item title is Petroleum waxes — Determination of melting point (cooling curve); status code is 9599; successor is ISO/DIS 3841; withdrawn / published date is 1977-02-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 3841:1977 _(verified: appears in the quote below)_ - **Item title:** Petroleum waxes — Determination of melting point (cooling curve) _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/DIS 3841 - **Withdrawn / published date:** 1977-02-01 _(verified: appears in the quote below)_ ## What the source says > 9403,IS,,ISO 3841:1977,Petroleum waxes — Determination of melting point (cooling curve),Cires de pétrole — Détermination du point de fusion (courbe de refroidissement),1977-02-01,1,['75.140'],ISO/TC 28,9599,,[26578],"['en','fr']",2,"

The method specified is unsuitable for waxes of the petroleum group, the microcrystalline waxes, or blends of such waxes with paraffin wax or scale wax. The test is particularly applicable to substances that are rather highly paraffinic or crystalline in nature.

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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).