Regulation on the Registration, Evaluation, Authorization, and Restriction of Chemicals (KKDIK Regulation); Prepared by the Republic of Turkiye Ministry of Environment, Urbanisation and Climate Change in line with the European Union REACH Legislation, it was published in the Official Gazette No. 30105 on June 23, 2017, and entered into force on December 23, 2017.

All substances manufactured or imported in quantities of 1 ton or more per year per manufacturer or importer, and all substances contained in articles intended to be released, must be registered in the Chemical Registration System in accordance with the KKDIK Regulation, unless specifically exempted from the scope of registration.

In order to be at the correct stage in the registration obligations, institutions must correctly define their role or roles in the supply chain for the substance (importer, manufacturer, formulator, article producer, etc.). When this definition is made correctly in accordance with the KKDIK Regulation, the other relevant responsibilities specified in the KKDIK Regulation‘ can be correctly determined according to whether the relevant substances are subject to registration or fall under exemptions.

It is crucial to make the right assessment based on the structure and intended use of the substances. While some situations fall completely outside the scope of the KKDIK Regulation, others are gradually being brought under its scope.

Substances included in KKDIK Regulation Annex 4 and covered by KKDIK Regulation Annex 5 are positioned according to the legislation specified in KKDIK Regulation Scope-Article 2; foodstuffs and animal feeds, medicinal products, biocidal products, etc. are exempt from registration under the regulation. However, it should be noted that even substances exempt from the registration obligation may be subject to authorization or restriction provisions in accordance with the KKDIK Regulation. For example, if the substance to be registered is an active substance registered under the Biocidal Products Regulation, it will be considered as having completed registration under the KKDIK Regulation and will be exempt from registration under the KKDIK Regulation. However, it should be noted that substances other than the active substance used in the production of biocidal products are subject to registration.

On 12.08.2025, the Republic of Turkiye Ministry of Environment, Urbanisation and Climate Change published on its website; “Procedures and Principles Regarding the Implementation of the KKDIK Regulation”, within the framework of which Pre-registrations have been set according to a specific calendar, and certain facilities have been provided for Temporary Registrations. Accordingly;

For substances covered by the KKDIK Regulation:

Pre-registration

• All potential registrants must complete Pre-registration by October 31, 2025.
• For substances that will be manufactured and/or imported for the first time after October 31, 2025, Pre-registration must be completed within 30 days.

Joint Registration

For substances covered by the KKDIK Regulation, the registration schedule has been determined in stages according to tonnage and classification as follows.

• For substances manufactured or imported in quantities of 1000 tons or more per year: December 31, 2026

• For substances manufactured or imported in quantities of 100 tons or more per year and classified as Aquatic Acute 1 and/or Aquatic Chronic 1 (H400, H410) hazardous substances under the SEA Regulation , the deadline is December 31, 2026
• For substances manufactured or imported in quantities of 1 ton or more per year and classified as carcinogenic, mutagenic, and/or toxic to the reproductive system in hazard categories 1A or 1B under the SEA Regulation , December 31, 2026
• For substances not covered by the above conditions,
  • For substances manufactured or imported in quantities of 100 tons or more per year, December 31, 2028
  • For substances manufactured or imported in quantities of 1 ton or more per year, December 31, 2030

Temporary Registration

• If the Lead Registrant is unable to fulfill its obligations regarding full registration, it shall make a temporary registration by submitting the data specified in Annex 1 of the Procedures and Principles to the Ministry by March 31, 2026.
• Following the lead company’s temporary registration, member companies shall submit their member registration entries to the Ministry via the Chemical Registration System (KKS) by September 30, 2026.Companies that are not included in the joint registration group for the substance and will submit their registration file separately shall, if they are unable to fulfill their obligations regarding full registration, submit a temporary registration to the Ministry by March 31, 2026, by submitting the data specified in Annex 1 of the Procedures and Principles via the Chemical Registration System (KKS).

Substances whose registration has not been completed by the specified registration deadline cannot be manufactured or imported until the registration process is completed.

Our Services Under the KKDIK Regulation;

• Determination of the scope of registration under the KKDIK Regulation
• Conducting pre-registration procedures for substances covered by the KKDIK Regulation
• Monitoring the Pre-SIEF and SIEF participation process for pre-registered substances
• Completing the registration process for pre-registered substances
• Preparing registration files and transferring them to the Chemical Registration System

For more detailed information, you can contact our Chemical Assessment Experts.