The European Chemicals Agency (ECHA) has published a new study conducted by Innovamol on nanomaterials used as or integrated into flame retardants, developed within the activities of the European Union Observatory for Nanomaterials (EUON). This publication concludes the work introduced in our previous Innovablog article and provides a comprehensive evidence-based overview of this rapidly evolving field.
Flame retardants are essential for improving the fire safety of many products, from construction materials and textiles to electronics, transportation and advanced technologies. As innovation in materials science continues to evolve, nanomaterials are increasingly being explored to enhance flame retardant performance, support multifunctional material design and potentially reduce the need for high additive loadings.
Innovamol combined structured searches of scientific and grey literature with patent analysis and stakeholder input, applying a transparent evidence-review methodology inspired by established systematic-review principles. This allowed a broad and heterogeneous evidence base to be screened, structured and critically assessed.
The evidence points to a rapidly developing field. More than 1,600 relevant studies were ultimately included in the review, with scientific activity accelerating markedly over the past decade. Rather than acting simply as replacements for conventional flame retardants, nanomaterials often function as components of more complex systems, improving performance through mechanisms such as barrier formation, catalytic charring and stabilisation of protective residues.
However, scientific activity and industrial maturity are not progressing at the same pace. Research is extensive, but large-scale industrial adoption remains limited and uneven across sectors. An even more important gap concerns the type of evidence available. Flame-retardant performance is widely investigated, while information on human and environmental hazards, realistic exposure, environmental fate, recycling and end-of-life behaviour remains considerably more fragmented. This does not necessarily mean that safety assessments are absent, but publicly available research remains strongly performance-oriented.
This imbalance has direct regulatory implications. Existing European frameworks, including REACH provisions for nanoforms, already provide a basis for assessment. Yet nano-enabled flame retardants are often highly heterogeneous systems in which materials may be functionalised, combined in hybrid formulations or strongly embedded within a matrix. Their behaviour and potential exposure therefore depend not only on the substance itself, but also on its formulation, application and life-cycle context. The challenge is therefore not simply to generate more data, but to generate the right data earlier. Performance studies should increasingly integrate safety, exposure and release-related endpoints; nanomaterial characterisation should become more harmonised; and realistic information on ageing, recycling and disposal should become part of the evidence base.
The report also highlights the importance of applying Safe-by-Design and Sustainable-by-Design principles from the earliest stages of material development, helping to align technological performance with safety and sustainability rather than addressing them only later in development. Thus, the central question is no longer only whether nano-enabled flame retardants can improve fire performance, but whether innovation, safety assessment and regulatory preparedness can progress together.
Through this study, Innovamol applied its expertise in structured evidence review, scientific data analysis and regulatory science to support ECHA and EUON in assessing an emerging area at the intersection of materials innovation, chemical safety and sustainability. The work reflects our broader approach: turning complex scientific evidence into structured, decision-ready knowledge for regulatory and innovation contexts.
Read the full publication at the following link:
“The mind is not a vessel to be filled, but a fire to be kindled” – Plutarch