Insights - REACH Went Global. Your Dossiers Didn't.

K-REACH. KKDİK. UK REACH. Four jurisdictions that looked at EU REACH and built their own version — each with its own submission system, its own validation layer, and its own data format.

The EU built the original in 2007. Since then, the logic of REACH has been replicated across major trading jurisdictions. What did not replicate: the ability to use one country’s dossier in another.

• K-REACH runs through KCMA.
• Turkey’s KKDİK goes through KKS, aligned to IUCLID 6 — and zero IUCLID 5 data is accepted without mandatory conversion.
• UK REACH has its own portal and its own diverging candidate list.

None of them accept EU submissions as filed. In Turkey’s case, with the member-entry deadline set for September 30, format conversion is a strict prerequisite.

The Data Is Reusable. The Format Is Not.

The years of REACH compliance work — substance data, study summaries, structured dossiers — are entirely reusable. The format they sit in is not.

What makes 2026 different is sequence. Existing chemical notification phases, hard autumn deadlines, and database divergences are all active simultaneously. Compliance teams managing multi-market portfolios are not facing one jurisdiction catching up — they are facing three enforcing at once.

The Question Has Shifted

It is no longer “are we compliant in the EU?” It is “can our compliance infrastructure keep pace across markets without rebuilding data from scratch?”

4chems operates at exactly this gap.

When the same substance data needs to reach KKS, KCMA, or UK REACH, the platform handles the format layer — IUCLID 5 converted to IUCLID 6, validated against each jurisdiction’s submission rules — so the compliance work done for EU REACH travels to the next market without rebuilding from scratch.

Svetlana Galakhova writes about regulatory infrastructure, multi-jurisdiction compliance, and the operational realities of IUCLID environments. Questions about multi-market dossier conversion — get in touch.