Eurospace warns against prohibitive limit values and space supply chain risks in proposed EU Chromium(VI) restriction under EU REACH

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ASD-EUROSPACE, acting with the support of the European Space Restrictions Task Force (RTF) under the ESCC Materials and Processes Technology Board (MPTB), has submitted detailed comments on 13 August 2026 to the European Chemicals Agency (ECHA) as part of the ECHA public consultation on the draft opinion of the Committee for Socio-economic Analysis (SEAC) regarding the proposed restriction of certain chromium(VI) oxides, oxyacids and salts under EU REACH.

The European space sector supports the objective of replacing the current REACH authorisation regime with a more predictable, legally certain and practical framework. While a significant reduction of Cr(VI) use has already been occurring under the current system, the sector remains concerned that some of the proposed restriction options could create significant implementation challenges and unintended consequences for critical industrial value chains that still have to rely on Cr(VI) for space hardware manufacturing.

In its submission, Eurospace highlights that the principal space-relevant application concerns the use of chromium trioxide in chemical conversion coatings and related repair and maintenance activities for aluminium alloy components used in launchers and spacecraft, a use covered by Use Category 5 (UC5) of the restriction proposal.

The comments support SEAC’s recognition that highly stringent exposure limits could adversely affect component availability, technological sovereignty and security of supply. Eurospace concurs that the most restrictive options, including RO3 and the RAC proposal, are clearly disproportionate given their limited additional benefits compared with the substantial risks they pose to industrial supply chains.

Eurospace further stresses that occupational exposure to chromium(VI) should primarily continue to be regulated through Occupational Safety and Health (OSH) legislation, including harmonised Binding Occupational Exposure Limits (BOELs), rather than through a parallel REACH restriction framework. According to the submission, duplicative requirements risk creating regulatory confusion while imposing significant compliance burdens on industry.

The sector also raises concerns regarding the practical enforceability of the restriction proposal, particularly the absence of a comprehensive list of covered chromium(VI) substances identified by CAS number. Eurospace argues that clear substance identification is essential for effective compliance, supply-chain management and enforcement.

In addition, the submission highlights SEAC’s acknowledgement that impacts throughout upstream and downstream supply chains have not been fully assessed. Eurospace considers these unresolved uncertainties particularly relevant for the highly specialised and interconnected European space supply chain.

Eurospace therefore urges EU policymakers to adopt a proportionate and evidence-based approach that maintains the competitiveness and resilience of the European space sector while ensuring effective protection of workers and the environment. The association calls for careful consideration of supply-chain impacts, realistic transition periods, regulatory coherence – namely with OSH legislation – and the continued availability of critical space technologies as a result of the ongoing regulatory process.

The SEAC opinion is expected to be adopted in November 2026. Following its adoption, the proposal will proceed to review by the European Commission and EU Member States before any final restriction is incorporated into Annex XVII of REACH.

Further information

  • Eurospace (RTF) response submitted on 13 August 2026 to the ECHA public consultation on the SEAC Draft Opinion for Cr(VI) (internal ref. # MPTB-ES-PO-0242) – The response will be published on the ECHA website here.
  • Eurospace news alert of 7 October 2025, including on the 1st Eurospace (MPTB) consultation response on the Cr(VI) restriction proposal to ECHA in 2025 (see below), available here
  • Eurospace (MPTB) comments of 17 September 2025 on the ECHA Annex XV restriction report for certain chromium(VI) oxides, oxyacids and salts, our ref. MPTB-ES-PO-0202, available here (see ECHA comment ID 9662).
  • Secretariat: Valentin Marie, Research Analyst & Compliance Manager, ASD-EUROSPACE, valentin.marie@eurospace.org, +33 (0) 7 86 58 74 34
  • RTF Coordinator: Tim Becker, Senior Legal Advisor, REACHLaw Ltd., tim.becker@reachlaw.fi; +358 (0)40 773 8143