EN ISO 1043-4:2021/prA1
(Amendment)Plastics - Symbols and abbreviated terms - Part 4: Flame retardants - Amendment 1 (ISO 1043-4:2021/DAM 1:2025)
Plastics - Symbols and abbreviated terms - Part 4: Flame retardants - Amendment 1 (ISO 1043-4:2021/DAM 1:2025)
Kunststoffe - Kennbuchstaben und Kurzzeichen - Teil 4: Flammschutzmittel (ISO 1043-4:2021/DAM 1:2025)
Plastiques - Symboles et termes abrégés - Partie 4: Ignifuges - Amendement 1 (ISO 1043-4:2021/DAM 1:2025)
Polimerni materiali - Simboli in kratice - 4. del: Zaviralci gorenja - Dopolnilo A1 (ISO 1043-4:2021/DAM 1:2025)
General Information
- Status
- Not Published
- Publication Date
- 05-Oct-2026
- Technical Committee
- CEN/TC 249 - Plastics
- Current Stage
- 4060 - Closure of enquiry - Enquiry
- Start Date
- 02-Jun-2025
- Completion Date
- 02-Jun-2025
Relations
- Effective Date
- 18-Dec-2024
Overview
EN ISO 1043-4:2021/prA1 (ISO 1043-4:2021/DAM 1:2025) is an amendment to the ISO 1043 series that updates the standardised symbols and abbreviated terms for flame retardants in plastics. This draft amendment revises the coded identification system used to denote specific classes of flame-retardant additives - helping manufacturers, specifiers and regulators to label and communicate material compositions consistently.
Key topics
- Purpose: maintain a harmonised coding scheme for flame retardants used in plastics by updating specific code assignments.
- Updated code lists for nitrogen compounds and organic phosphorus compounds:
- Nitrogen compounds (codes replaced to):
- 30 melamine
- 31 urea
- 32 monomeric melamine-based compounds (melamine salts)
- 33 polymeric melamine-based compounds
- 34 N-alkoxy hindered amine-based compounds
- 35 other nitrogen-based compounds
- 36–39 not allocated
- Organic phosphorus compounds (codes replaced to):
- 40 aryl phosphates
- 41 chlorinated organic phosphorus compounds
- 42 brominated organic phosphorus compounds
- 43 methyl esters of phosphoric or phosphonic acid
- 44 other halogen-free organic phosphorus compounds
- 45–49 not allocated
- Nitrogen compounds (codes replaced to):
- Document status: circulated as a draft amendment (DAM 1:2025) for comment and voting within ISO/TC 61/SC 1 and CEN parallel process. Final text may be subject to change.
Applications
- Clear, standardised labelling of plastic products, data sheets and material declarations to indicate the type of flame retardant used.
- Supply-chain communication between resin producers, compounders, OEMs and recyclers where identifying additive chemistry is important for processing, safety and end-of-life handling.
- Regulatory and compliance documentation where consistent terminology and symbol sets simplify reporting and conformity assessment.
- Product design and material selection: helps engineers compare formulations and choose appropriate flame-retardant classes based on performance, halogen content, or regulatory constraints.
Who should use this standard
- Plastics manufacturers and compounders
- Material compliance and regulatory teams
- Product designers and OEMs specifying plastic parts
- Testing and certification laboratories
- Recyclers and waste-management organizations tracking additive chemistries
Related standards
- ISO 1043 series (other parts cover general symbols and abbreviations for plastics)
- EN ISO 1043-4:2021 (base document being amended)
Keywords: ISO 1043-4, EN ISO 1043-4:2021/prA1, flame retardants, plastics symbols, melamine, urea, aryl phosphates, phosphorus flame retardants, standardised codes, material labelling.
Frequently Asked Questions
EN ISO 1043-4:2021/prA1 is a draft published by the European Committee for Standardization (CEN). Its full title is "Plastics - Symbols and abbreviated terms - Part 4: Flame retardants - Amendment 1 (ISO 1043-4:2021/DAM 1:2025)". This standard covers: Plastics - Symbols and abbreviated terms - Part 4: Flame retardants - Amendment 1 (ISO 1043-4:2021/DAM 1:2025)
Plastics - Symbols and abbreviated terms - Part 4: Flame retardants - Amendment 1 (ISO 1043-4:2021/DAM 1:2025)
EN ISO 1043-4:2021/prA1 is classified under the following ICS (International Classification for Standards) categories: 83.040.30 - Auxiliary materials and additives for plastics; 83.080.01 - Plastics in general. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 1043-4:2021/prA1 has the following relationships with other standards: It is inter standard links to EN ISO 1043-4:2021. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN ISO 1043-4:2021/prA1 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2025
Polimerni materiali - Simboli in kratice - 4. del: Zaviralci gorenja - Dopolnilo A1
(ISO 1043-4:2021/DAM 1:2025)
Plastics - Symbols and abbreviated terms - Part 4: Flame retardants - Amendment 1
(ISO 1043-4:2021/DAM 1:2025)
Kunststoffe - Kennbuchstaben und Kurzzeichen - Teil 4: Flammschutzmittel (ISO 1043-
4:2021/DAM 1:2025)
Plastiques - Symboles et termes abrégés - Partie 4: Ignifuges - Amendement 1 (ISO
1043-4:2021/DAM 1:2025)
Ta slovenski standard je istoveten z: EN ISO 1043-4:2021/prA1
ICS:
01.075 Simboli za znake Character symbols
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
Amendment
ISO 1043-4:2021/
DAM 1
ISO/TC 61/SC 1
Plastics — Symbols and abbreviated
Secretariat: BSI
terms —
Voting begins on:
Part 4:
2025-03-10
Flame retardants
Voting terminates on:
2025-06-02
AMENDMENT 1
Plastiques — Symboles et termes abrégés —
Partie 4: Ignifuges
AMENDEMENT 1
ICS: 83.080.01; 83.040.30
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO 1043-4:2021/DAM 1:2025(en)
DRAFT
ISO 1043-4:2021/DAM 1:2025(en)
Amendment
ISO 1043-4:2021/
DAM 1
ISO/TC 61/SC 1
Plastics — Symbols and
Secretariat: BSI
abbreviated terms —
Voting begins on:
Part 4:
Flame retardants
Voting terminates on:
AMENDMENT 1
Plastiques — Symboles et termes abrégés —
Partie 4: Ignifuges
AMENDEMENT 1
ICS: 83.080.01; 83.040.30
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
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BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
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