ISO 8124-3:2020

Overview

ISO 8124-3:2020 - "Safety of toys - Part 3: Migration of certain elements" specifies maximum acceptable migration levels and laboratory methods for sampling, extraction and determination of eight toxic elements (antimony, arsenic, barium, cadmium, chromium, lead, mercury and selenium) from toy materials and toy parts. The standard is focused on reducing children's chemical exposure by controlling element migration from coatings, polymers, papers, textiles, glass/ceramics/metals, modelling compounds, writing inks, paints and other toy materials.

Key topics and technical requirements

• Elements covered: antimony, arsenic, barium, cadmium, chromium, lead, mercury, selenium.
• Scope of materials: coatings, polymeric materials (including laminates), paper/paperboard, textiles, glass/ceramic/metallic materials (excluding lead solder used for electrical connections), wood/leather/other materials, materials intended to leave a trace (pencil graphite, inks), pliable modelling materials, and paints/finger-paints.
• Applicability: all food/oral contact toys, cosmetic toys, writing instruments categorized as toys, all toys intended for or suitable for children under 72 months, and accessible coatings/liquids/pastes/gels. Packaging is excluded unless intended to be kept or part of the toy.
• Laboratory procedures: detailed instructions for selection of test portions, material-specific preparation and extraction procedures (see clauses 9.1–9.9), dewaxing options for greasy samples, elemental analysis methods and calculation of results.
• Analysis and reporting: methods include atomic spectrometry techniques (Annex C informative - ICP-OES referenced), definition of method detection limits (MDL), interpretation of results and required test report content.
• Toxicity basis: the standard’s limits derive from bioavailability/day values (e.g., lead 0.7 µg/day, cadmium 0.6 µg/day, mercury 0.5 µg/day) and an assumed 8 mg/day toy-material ingestion scenario used to convert to migration limits.

Practical applications and users

ISO 8124-3 is used by:

• Toy manufacturers to design compliant materials and formulations and to validate suppliers.
• Testing laboratories for accredited chemical migration testing and reporting.
• Regulators and conformity assessors enforcing toy safety legislation and market surveillance.
• Importers, retailers and procurement teams to verify chemical safety before market entry.
• R&D and quality assurance teams to screen raw materials and finished articles for restricted-element migration.

Practical benefits include ensuring compliance with chemical migration requirements, reducing toxic exposure risk for children, and providing harmonized test methods for consistent market surveillance and product certification.

Related standards

• ISO 8124-1 (mechanical/physical properties)
• ISO 8124-6 (certain phthalates)
• ISO 3696 (water for analytical laboratory use)

Keywords: ISO 8124-3, toy safety, migration of elements, toy testing, lead cadmium mercury, ICP-OES, sampling and extraction, chemical migration limits.