Nanomaterials Expert Group

The NMEG aims to seek common ground among experts on scientific and technical issues relating to the implementation of REACH, CLP and the Biocidal Products Regulation (BPR) for nanomaterials.


Establishment and role

The NMEG supports the implementation of ECHA’s Workplan for Nanomaterials 2016-2018, and provides informal advice on scientific and technical issues regarding the implementation of REACH, CLP and BPR legislations in relation to nanomaterials.

The NMEG was established in October 2012 with the support of the competent authorities for REACH and CLP (CARACAL) and the competent authorities for biocides.

The expert group is coordinated and hosted by ECHA. The agendas for the meetings are developed in consultation with the members of the NMEG by proposals from the participating experts, the Member State competent authorities (MSCAs), Member State Committee (MSC), Committee for Risk Assessment (RAC) and Biocidal Products Committee (BPC) members, ECHA secretariat, European Commission, other EU Agencies and representatives from industry or non-governmental organisations.

The NMEG is an informal expert group which provides advice on scientific and technical issues regarding the implementation of REACH, CLP and Biocidal Products Regulations in relation to nanomaterials. The mandate of the NMEG was updated in February 2017.


The discussions in the NMEG facilitate knowledge exchange between MSCAs, NGOs and industry, which foster increased understanding on specific issues relating to nanomaterials, leading to more efficient discussions at MSC, RAC or BPC level.

This may improve the MSCAs’ capacity to evaluate nanomaterials and accelerate the decision-making process relating to dossiers involving them. More importantly, it creates a forum for all parties involved in the discussion around the safety of nanomaterials, to share their views in a collaborative environment.

The NMEG does not have a formal role in any regulatory process and therefore does not interfere with decision making under REACH, CLP or BPR.


Participants of the NMEG are nominated experts from:

  • EU Member State competent authorities
  • European Commission: DG Environment (ENV), DG Internal Market, Industry, Entrepreneurship and SMEs (GROW), and the Joint Research Centre (JRC)
  • European Food Safety Authority (EFSA)
  • Stakeholder organisations
    • Industry associations
    • Non-governmental organisations

The topics are suggested for the agenda of the NMEG by ECHA or by the expert group members. Sessions are usually open to all participants, but closed sessions with authorities only are also possible.

Among the main topics that have been addressed by the NMEG are: technical challenges of registering and characterising substances; practical reporting in IUCLID; assessment of environmental or human health hazards for nanomaterials; updates on specific dossiers or substance evaluation cases (in closed sessions). NMEG has also discussed issues related to the development of REACH guidance documents for nanomaterials.

Meeting dates and reports

The NMEG usually meets twice a year.


Meetings Date Agenda Tour de table Minutes
NMEG-13 29-30 March 2021      
Meetings 2018
NMEG-12 6-7 November 2018  [PDF] [PDF] [PDF]
NMEG-11 3-4 May 2018 [PDF] [PDF] [PDF]
Meetings 2017
NMEG-10 7-8 November 2017     [PDF]
NMEG-9 16-17 May 2017     [PDF]
Meetings 2016 (May meeting was cancelled)
NMWG-8 8-9 November 2016     [PDF]
Meetings 2015
NMWG-7 11-12 November 2015     N/A
NMWG-6 28-29 April 2015     N/A
Meetings 2014
NMWG-5 21-22 October 2014     N/A
NMWG-4 24-25 April 2014     N/A
Meetings 2013
NMWG-3 1-2 October 2013     N/A
NMWG-2 27 June 2013     N/A
NMWG-1 23 January 2013     N/A

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