Chemical compliance in textiles and leather: SVHC and REACH
A chemical failure is the most expensive way to lose a contract
A container of dyed cotton garments leaves the factory on schedule, reaches a European retailer, and then sits untouched in a bonded warehouse because the brand's laboratory found an azo dye that breaks down into a banned aromatic amine. The order is rejected, the season is missed, and the supplier carries the cost of stock that can no longer be sold into the European Union. For textile and leather exporters this is a familiar and painful pattern. The substances are invisible on the shop floor, the limits are written into law, and the test that catches them runs only after the money has already gone into production.
Reading this as a regulatory question rather than a quality afterthought changes how you prepare. The rules that govern chemicals in clothing, home textiles and leather goods are not one list set by one body. They sit in layers, each with its own authority and its own trigger. An exporter who treats the whole field as a single vague "REACH problem" tends to miss the exact layer that causes the rejection.
Three layers of chemical rules sit on every shipment
The first layer is REACH Annex XVII, the legally binding set of restrictions. It names individual substances and caps them in finished articles: azo dyes that release listed carcinogenic aromatic amines, chromium VI in leather, nonylphenol ethoxylates, several phthalates, and a broad entry covering carcinogenic, mutagenic and reprotoxic substances in clothing, accessories and footwear. Breach an Annex XVII limit and the article cannot lawfully be placed on the EU market, full stop.
The second layer is the REACH Candidate List of substances of very high concern, known as SVHCs. This list bans nothing by itself. Once an SVHC is present above 0.1 % by weight in an article, it instead triggers obligations: you pass information down the supply chain, you answer a consumer request inside the legal window, and you notify the article to the SCIP database held by the European Chemicals Agency. The complication is that the list grows roughly twice a year, so an article that was clear last season can carry a fresh duty this one. Targeted SVHC testing against the current list is the only way to know where you stand.
The third layer is the one exporters usually feel first: the buyer's own Restricted Substances List. Brands and retailers write RSLs that are often stricter than the law and that fold in the requirements of every market they sell into. In practice the brand's laboratory, not a customs officer, is who tests your goods, and the brand's limit is what decides whether you remain on the approved supplier list. A recognised certification such as Oeko-Tex certification can settle much of this in advance by proving the article against an established RSL before the buyer ever asks.
What the laboratory actually looks for
The restricted-substance lists read as chemistry, but they map onto ordinary production choices: the dye, the print paste, the water-repellent finish, the tannage, the metal trim. Knowing which substance rides on which material is what lets you test the right thing instead of testing everything.
In textiles
The recurring names are azo dyes that cleave to restricted aromatic amines, formaldehyde from easy-care and anti-crease finishes, alkylphenol ethoxylates left over from washing and dyeing auxiliaries, phthalates in plastisol prints and coated fabrics, and per- and polyfluorinated substances in durable water-repellent treatments. Trims add their own risks: nickel release from zips, rivets and buttons that sit against the skin, and lead or cadmium in painted or plated components. Heavy metals can also arrive through pigments and mordants.
In leather
Leather carries a sharper version of the same problem because the tanning chemistry is aggressive. Chromium VI, which can form from chromium III during processing and storage, is capped tightly in the Annex XVII entry for leather articles in skin contact. Add formaldehyde from retanning, pentachlorophenol and other chlorophenols used as preservatives, dimethyl fumarate from the anti-mould sachets tucked into shoe boxes, and the same azo dye and PFAS concerns that textiles face. Footwear often fails on a combination rather than a single substance, which is why leather goods are usually tested across a panel.
Buyers specify the method as tightly as the limit, because a result only means something against a defined test. Azo dyes in textiles are screened by EN 14362 and in leather by ISO 17234, chromium VI in leather by ISO 17075, and formaldehyde by ISO 14184 for textiles or ISO 17226 for leather. The point for a supplier is not to memorise the standards but to make sure the laboratory reports against the exact method the buyer names, on a sample that represents the real production rather than a hand-picked swatch.
The Candidate List is a moving target, not a fixed exam
Most chemical programmes fail not because a supplier ignored the rules but because the rules moved. The Candidate List is updated about twice a year, and each update can pull a substance you already use into scope above the 0.1 % threshold. The moment it does, three duties switch on: communication to your business customers, a reply to any consumer who asks within forty-five days, and a SCIP notification for the article. The regulatory calendar is tightening around specific substances as well. A dedicated REACH restriction on formaldehyde in finished articles takes effect in 2026, and the long-running proposal for a broad PFAS restriction signals where finishes are heading. Treating compliance as a one-off certificate misreads how the system works. It behaves more like a subscription, renewed every time the list changes.
One distinction saves a lot of confusion. The restrictions and the Candidate List apply to the article. If your business also imports the dye-stuffs, pigments and finishing chemicals into the EU rather than only the finished product, those substances and mixtures fall under REACH registration, a separate duty from the limits placed on the article itself. Turkish suppliers carry a parallel obligation at home, because the KKDIK regime mirrors REACH inside Türkiye, and the same substance data usually serves both sides.
The control is shifting upstream, from RSL to MRSL
For years the model was simple: test the finished article against a Restricted Substances List and reject what fails. Brands have learned that this catches problems too late, after a whole batch has been dyed and finished. The newer approach works on the Manufacturing Restricted Substances List, the MRSL, which controls the chemicals allowed into the process in the first place, not only the residues left in the cloth. Programmes built around the ZDHC Roadmap to Zero push this logic through dyehouses, tanneries and finishing units, so that the wet processor proves its chemical inputs rather than the garment maker discovering a problem at the end. For a supplier, the practical message is that your dyehouse and your tannery now sit inside your compliance scope, not just your own cut-and-sew floor.
Building a programme that survives the buyer's audit
A control programme that holds up under a buyer's scrutiny rests on a few habits rather than a thick binder. Start by mapping your bill of materials and your wet processes to a substance-risk list, so you know which inputs could carry which restricted substance. Collect declarations of compliance and safety data sheets for every dye, auxiliary and finishing chemical, and treat a missing declaration as a red flag at goods-in, not at final test. Build a risk-based test plan against the strictest list that applies to you, which is usually the buyer's RSL rather than the bare legal minimum, and refresh it on each Candidate List cycle. General REACH testing services can cover the routine panel, while focused checks address the substances specific to your material and finish.
Keep the evidence in order so you can answer an Article 33 request inside the legal window without scrambling, and so an auditor can trace any article back to the inputs that made it. Chemical compliance in textiles and leather is not won in the laboratory at the end. It is won in the choice of dye, the control of the tannery, and the discipline of testing against the right list before the goods ever ship. The exporters who treat it that way stop losing seasons to a substance they could have designed out at the start.
