Ultimo aggiornamento 15 Aprile 2026
SVHC and REACH compliance for sensitive supply chains
When a company supplies components, mixtures, surface treatments, or technical products to large industrial groups, REACH compliance becomes a practical issue involving supplier qualification, business continuity, and document reliability.
This is especially true in supply chains that are highly sensitive to hazardous substance issues, such as defense, aerospace, electronics, advanced mechanical engineering, and special treatments. In these contexts, the customer does not simply ask for a standard declaration: they often require precise answers for each individual part number, verification of the presence or absence of SVHCs, clarity on the REACH status of the substances used, and consistency between declarations, safety data sheets, and the information received from subcontractors.
This is exactly where many companies struggle, because they need to translate complex regulatory obligations into precise, defensible, and consistent technical answers across the entire supply chain.
To address these requests properly, the first step is understanding what SVHCs are and why they are so closely monitored.
What are SVHCs
SVHCs are Substances of Very High Concern, meaning substances identified under the REACH Regulation as extremely concerning. This category includes, for example, carcinogenic, mutagenic, or toxic for reproduction substances, as well as persistent, bioaccumulative and toxic substances, very persistent and very bioaccumulative substances, and substances of equivalent level of concern.
When a substance is identified as an SVHC, it may be included in the Candidate List. This step is far from theoretical: inclusion in the Candidate List triggers specific obligations for manufacturers, importers, downstream users, and suppliers of articles, and it may represent the first sign of a future regulatory development toward authorization or other risk management measures.
For companies operating in complex supply chains, this means something very simple: You need to understand whether it is present in your products, in what form, at what concentration, and with what documentary and commercial implications.
The obligations to know when dealing with SVHCs
SVHCs are often mistakenly associated with an automatic ban. In reality, the framework is more complex.
1. Presence of SVHCs and communication along the supply chain
If a substance is included in the Candidate List, the company must first determine where it is found: in the substance itself, in a mixture, in an article, in a treatment, or in one stage of the manufacturing process.
Different obligations may then apply. In the case of substances and mixtures, the safety data sheet may need to be updated. In the case of articles, the presence of SVHCs above certain thresholds may trigger communication obligations toward customers and, in some cases, specific notifications.
For many supplier companies, the practical issue is not only regulatory, but also documentary: the available information is often fragmented between SDSs, supplier declarations, subcontractor technical data, and tailored requests from the final customer.
2. Candidate List does not automatically mean authorization
Another key point is the distinction between SVHC, authorization, and restriction.
Inclusion in the Candidate List does not automatically mean inclusion in Annex XIV. However, some SVHCs may be prioritized and become subject to authorization. In that case, after the so-called “sunset date,” the substance may no longer be used without a specific authorization covering that use.
For suppliers in sectors such as aerospace or defense, this point is crucial. It is not enough to state whether a substance is present or absent: it is necessary to determine whether it is subject to the authorization regime, whether there are covered uses, whether the supply chain is operating under upstream authorizations, or whether the issue only concerns a preventive regulatory risk assessment.
3. Restriction: a different but closely related topic
Alongside authorization, there is also the restriction system, which may limit or prohibit the manufacture, placing on the market, or use of a substance on its own, in a mixture, or in an article. Restrictions follow a different logic compared with authorization and require a specific assessment of the actual use of the substance.
This is essential to avoid very common mistakes: declaring a product as “REACH compliant” without verifying whether the substances involved fall under the Candidate List, Annex XIV, or Annex XVII, or without checking whether the actual use in the customer’s supply chain raises additional concerns.
Why suppliers to large industrial groups need real control
When a customer such as a prime contractor or a large industrial group asks for an SVHC declaration or confirmation of REACH compliance, they are asking for much more than a standard wording.
In practical terms, they want to know whether the company truly has control over:
- the substances used in its products or processes;
- supplier and subcontractor documentation;
- consistency between SDSs, composition, and declarations;
- the possible presence of substances of concern;
- the ability to provide precise answers for each product code or part number.
This is where the gap becomes clear between companies that simply have documents and companies that have a genuinely solid regulatory management system.
Chemicals Consulting’s service for SVHC and REACH compliance
Our service is designed to turn a complex request into an orderly, traceable, and technically defensible process for companies receiving detailed requests from customers in the defense, aerospace, or other highly regulated sectors.
We begin with a training introduction on SVHCs, REACH authorization, and restriction, helping align the people within the company who are responsible for managing the issue and understand the actual obligations that apply.
We then continue with in-depth analysis of the substances relevant to the company, such as chromium compounds, nonylphenol ethoxylates, or other substances of concern, in order to clarify whether the issue relates to the Candidate List, authorization, restriction, or other compliance aspects.
We then move into the operational phase with an audit of the documentation and requests received from the customer, to verify what is really being asked, the level of detail required, and the type of evidence needed to respond correctly.
To support all of this, we also carry out the review or verification of SDSs for products already in the company database and for new products, in order to assess the consistency of the documentary basis.
Finally, we support the company in completing the declarations required by the customer, working in detail on the relevant part numbers or products, and we provide a proactive regulatory update service on monitored or relevant substances.
Managing the SVHC topic correctly helps reduce the risk of inaccurate responses, disputes, follow-up requests, and commercial disruptions. Above all, it helps the company present itself to the customer as a reliable, aware, and truly well-structured supplier.
If your company receives requests relating to SVHCs, the Candidate List, authorization, or REACH compliance from customers in defense, aerospace, or other technically complex supply chains, we can help you review the documentation, clarify the critical points, and build solid and consistent responses.
