# ISO 28941-1:2008 — Withdrawn and superseded ISO standards For ISO 28941-1:2008, item title is Plastics — Poly(phenylene ether) (PPE) moulding and extrusion materials — Part 1: Designation system and basis for specifications; status code is 9599; successor is ISO 20557-1:2018; withdrawn / published date is 2008-12-02, recorded from its source on 2026-08-05. - **Identifier:** ISO 28941-1:2008 _(verified: appears in the quote below)_ - **Item title:** Plastics — Poly(phenylene ether) (PPE) moulding and extrusion materials — Part 1: Designation system and basis for specifications _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 20557-1:2018 - **Withdrawn / published date:** 2008-12-02 _(verified: appears in the quote below)_ ## What the source says > 41627,IS,,ISO 28941-1:2008,Plastics — Poly(phenylene ether) (PPE) moulding and extrusion materials — Part 1: Designation system and basis for specifications,Plastiques — Matériaux à base de poly(phénylène éther) (PPE) pour moulage et extrusion — Partie 1: Système de désignation et base de spécification,2008-12-02,1,['83.080.20'],ISO/TC 61/SC 9,9599,[25975],[68365],"['en','fr']",9,"
ISO 28941-1:2008 establishes a system of designation for PPE thermoplastic materials, which may be used as the basis for specifications.
The types of PPE plastic are differentiated from each other by a classification system based on appropriate levels of the designatory properties