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Substance of very high concern

Chemical substance that is hazardous to humans or the environment

  • 4 min read
  • 4 chapters

Related on Lably

Through Substance (chemistry), European Union and Carcinogen

The first list of SVHCs was published on 28 October 2008 with the list being updated biannually since then. The most recent update occurred in June 2025, bringing the size to 250 SVHCs.

Criteria

The criteria are given in article 57 of the REACH Regulation. A substance may be proposed as an SVHC if it meets one or more of the following criteria:

  • it is carcinogenic;
  • it is mutagenic;
  • it is toxic for reproduction;
  • it is persistent, bioaccumulative and toxic (PBT substances);
  • it is very persistent and very bioaccumulative (vPvB substances);
  • there is "scientific evidence of probable serious effects to human health or the environment which give rise to an equivalent level of concern"; such substances are identified on a case-by-case basis.

The "equivalent concern" criterion is significant because it is this classification which allows substances which are, for example, neurotoxic, endocrine-disrupting or otherwise present an unanticipated environmental health risk to be regulated under REACH.

Simply because a substance meets one or more of the criteria does not necessarily mean that it will be proposed as an SVHC. Many such substances are already subject to restrictions on their use within the European Union, such as those in Annex XVII of the REACH Regulation. SVHCs are substances for which the current restrictions on use (where these exist) might be insufficient. There are three priority groups for assessment:

  • PBT substances and vPvB substances;
  • substances which are widely dispersed during use;
  • substances which are used in large quantities.

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