Ana sayfa/KKDIK vs REACH: Key Differences

KKDIK vs REACH: Key Differences

KKDIK (the Regulation on the Registration, Evaluation, Authorisation and Restriction of Chemicals) is Turkey’s equivalent of the EU REACH Regulation. Both require registration of substances manufactured or imported at 1 tonne per year or more, tonnage-based data requirements, an IUCLID technical dossier and Safety Data Sheets, and both allow foreign manufacturers to appoint an Only Representative. The main differences are the competent authority and submission system — KKDIK is administered by Turkey’s Ministry of Environment, Urbanisation and Climate Change through the KKS system, whereas REACH is managed by ECHA via REACH-IT — as well as dossier language (Turkish for KKDIK), fees and timelines. Under KKDIK, registrants must complete their preliminary or full registration by 30 September 2026; final full-registration dates depend on the substance’s tonnage band and hazard profile. EU REACH registration deadlines, by contrast, were completed in 2018. ONAY Mühendislik supports both KKDIK and REACH registrations, including Only Representative services for foreign manufacturers.

Related services

Contact ONAY Mühendislik for KKDIK and REACH compliance support.

Same logic, separate systems

KKDIK and REACH share their architecture but remain independent. REACH governs the European Union market and KKDIK the Turkish one. Submissions go to different authorities through different portals, fees are paid separately and the deadlines do not align.

Side by side

Authority and portal: ECHA and REACH-IT versus the Turkish KKS system
Representation: an only representative is needed in each market separately
Data: largely the same studies, but separate usage rights
Deadlines: independent calendars
Language: the Turkish safety data sheet must be in Turkish

Can the EU dossier be reused?

Technically yes, as a basis. Legally you also need the right to use those studies in Türkiye. If your letter of access covers REACH only, it has to be extended or renegotiated, and that is where most schedules slip.

One inventory, two columns

Companies exporting to both markets should keep a single inventory with separate tonnage columns. Volumes rarely match, the bands often differ and so does the required data package, which affects what you should be paying for.

Official source: KKDIK Regulation — Turkish Official Gazette.