# ISO 8988:1995 — Withdrawn and superseded ISO standards

For ISO 8988:1995, item title is Plastics — Phenolic resins — Determination of hexamethylenetetramine content — Kjeldahl method and perchloric acid method; status code is 9599; successor is ISO 8988:2006; withdrawn / published date is 1995-04-20, recorded from its source on 2026-08-05.

- **Identifier:** ISO 8988:1995 _(verified: appears in the quote below)_
- **Item title:** Plastics — Phenolic resins — Determination of hexamethylenetetramine content — Kjeldahl method and perchloric acid method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 8988:2006
- **Withdrawn / published date:** 1995-04-20 _(verified: appears in the quote below)_

## What the source says

> 25124,IS,,ISO 8988:1995,Plastics — Phenolic resins — Determination of hexamethylenetetramine content — Kjeldahl method and perchloric acid method,Plastiques — Résines phénoliques — Détermination de la teneur en hexaméthylènetétramine — Méthode Kjeldahl et méthode à l'acide perchlorique,1995-04-20,2,['83.080.10'],ISO/TC 61/SC 12,9599,[16517],[36285],"['en','fr']",4,<p>Cancels and replaces the first edition (1989). Specifies two methods for the determination of the hexamethylenetetramine ('hexa') content of phenolic resins. They are equivalent. The Kjeldahl method is not applicable if there are other components containing nitrogen in the phenolic resin. The perchloric acid method is only appli

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).