ISO 6427-2025 PDF

Full title and description

St ISO 6427-2025 — Plastics — Determination of matter extractable by organic solvents (conventional methods). Specifies conventional hot‑solvent extraction procedures and a cold‑extraction option for quantifying components in plastics that are extractable by organic solvents.

Abstract

This standard defines laboratory methods to determine extractable matter from plastics using hot organic liquids near their boiling points and describes a cold‑extraction alternative. It covers extractable monomers, oligomers, polymers, plasticizers, stabilizers and similar additives, and excludes use for food/drinking‑water contact materials and for migration tests.

General information

• Status: Published.
• Publication date: 2025-07 (Edition 4).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 83.080.01 (Plastics).
• Edition / version: 4 (2025).
• Number of pages: 14.

Key bibliographic details above are taken from the ISO catalogue entry for ISO 6427:2025.

Scope

Applies to the determination of components in plastics extractable by hot organic solvents (near solvent boiling points) using conventional extraction methods and to a specified cold‑extraction procedure. The standard is not intended for plastics intended for food or drinking‑water contact, and its methods are not migration tests; for plastics not listed in the standard, operating conditions are to be agreed between interested parties.

Key topics and requirements

• Definition of extractable matter categories (monomers, oligomers, plasticizers, stabilizers, low‑molecular‑weight residues).
• Procedures for hot solvent extraction using organic liquids near boiling point, including sample preparation and mass‑loss calculation.
• Optional cold‑extraction method for specific cases (described as an annex/alternative procedure).
• Requirements for reproducibility, choice of solvent, extraction time, and agreed‑upon operating conditions when testing non‑listed plastics.
• Explicit exclusion of application for food/drinking‑water contact plastics and migration testing; users should follow specific regulations where applicable.

The requirements and methods summarized here follow the ISO 6427:2025 technical text.

Typical use and users

Used by polymer and plastics manufacturers, quality‑control and product‑testing laboratories, conformity assessment bodies, research institutions and material‑safety assessors to quantify extractable low‑molecular‑weight constituents and to support product development, acceptance testing and regulatory compliance workflows. The standard has been adopted or published as national/adopted variants in multiple countries, indicating common laboratory use across national standards bodies.

Related standards

ISO 6427:2025 replaces earlier editions of ISO 6427 (including the 2013 and 1992 editions). Related test standards commonly used alongside extractables testing include other ISO plastics test methods (mechanical, thermal and rheological test standards) developed by ISO/TC 61 and its subcommittees; users often reference national EN/ISO adoptions for regulatory or procurement contexts.

Keywords

plastics, extractables, organic solvent extraction, hot‑solvent extraction, cold extraction, plasticizers, stabilizers, monomers, ISO 6427, ISO/TC 61, material testing.

FAQ

Q: What is this standard?

A: ISO 6427:2025 is an international standard specifying conventional laboratory methods to determine matter in plastics that can be extracted by organic solvents.

Q: What does it cover?

A: It covers hot‑solvent extraction procedures (using organic solvents near their boiling points), a cold‑extraction option, and guidance on testing conditions; it excludes food/drinking‑water contact plastics and migration tests.

Q: Who typically uses it?

A: Polymer and plastics manufacturers, independent testing laboratories, quality and compliance teams, and research institutions use the standard for characterizing extractable constituents and supporting product verification.

Q: Is it current or superseded?

A: Current — ISO 6427:2025 (Edition 4) was published in July 2025 and supersedes earlier editions (for example ISO 6427:2013).

Q: Is it part of a series?

A: It is part of the body of ISO test methods for plastics maintained by ISO/TC 61 (Plastics) and its subcommittees; it is often referenced alongside other ISO/EN test standards for comprehensive material characterization.

Q: What are the key keywords?

A: Extractables, organic solvent extraction, plastics testing, hot extraction, cold extraction, plastic additives, ISO 6427.