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KKDIK 30 September 2026 Compliance Deadline: Temporary Registration, Only Representative Strategy and Long-Term Market Access in Türkiye

Aug 25
12 min read
Kkdik Temporary Registration

Executive answer: what international companies need to know


Companies manufacturing chemical substances in Türkiye or supplying substances, mixtures or certain articles to the Turkish market should treat 30 September 2026 as an immediate KKDIK compliance deadline. By that date, substances within the registration scope are expected to have either a full registration or an accepted temporary registration pathway in the Ministry's Chemical Registration System, known as KKS.


This date must be distinguished from the phased statutory deadlines for completing full registration under the KKDIK Regulation. Depending on tonnage and hazard classification, those deadlines are 31 December 2026, 31 December 2028 and 31 December 2030.


For non-Turkish manufacturers, formulators and article producers, the central question is not simply whether a pre-registration exists. The real questions are:


  • Is every substance and relevant tonnage covered by a valid registration strategy?

  • Is the current Only Representative appointment legally and operationally effective?

  • Are all covered Turkish importers correctly identified in KKS?

  • Can the company prove its substance identity, supply-chain scope and data rights?

  • Is the chosen temporary route consistent with the Lead Registrant and joint-submission status?

  • Can the temporary dossier be converted into a complete registration by the applicable statutory deadline?


A pre-registration alone should not be treated as sufficient protection after 30 September 2026. Companies that wait for a Lead Registrant, a consortium or a Turkish importer without verifying the actual KKS status may expose their supply chain to non-compliance, enforcement and market-access disruption.

Need a confidential portfolio check? Doruksistem can review your substance list, tonnage bands, Lead Registrant status, importer coverage and Only Representative arrangement before a registration or OR-change decision is made.

What is KKDİK, and who is affected?


KKDIK is Türkiye's chemicals regulation for the registration, evaluation, authorisation and restriction of chemicals. It is broadly aligned with the EU REACH Regulation, but it is a separate Turkish legal regime with its own competent authority, KKS platform, registration procedures and deadlines.


Registration generally applies when a substance is manufactured in or imported into Türkiye at one tonne or more per year per registrant, unless an exemption applies. The obligation may concern substances supplied:


- on their own;

- as constituents of mixtures; or

- in articles when the conditions for intended release are met.


The actors most directly affected include:


- Turkish manufacturers and importers;

- non-Turkish manufacturers exporting substances or mixtures to Türkiye;

- non-Turkish formulators supplying mixtures to Türkiye;

- non-Turkish article producers where an intended-release registration obligation arises;

- global groups supplying through several production sites, legal entities or Turkish importers; and

- distributors and industrial customers that require reliable evidence of registration coverage.


An EU REACH registration does not automatically satisfy KKDIK. EU data and technical work may support a Turkish dossier where the company has the necessary rights and the information is suitable, but a separate KKDIK submission and Turkish compliance structure are still required.


The two timelines companies must not confuse


1. The 30 September 2026 compliance milestone


The Ministry's 2026 implementation announcements clarified that substances subject to registration should obtain a full or temporary registration status by 30 September 2026, regardless of whether a Lead Registrant is available and regardless of the later tonnage-based full-registration deadline.


From 1 October 2026, inspections and supply-chain checks are expected to focus on the existence of a valid full or temporary registration number. Companies should therefore avoid describing 30 September as merely an internal planning target.


At the same time, it should not be confused with the statutory completion dates below. The most accurate description is: a Ministry-announced registration and enforcement milestone operating alongside the phased full-registration calendar in the Regulation.


2. Statutory deadlines for full registration

Full-registration deadline

Main substance categories

31 December 2026

Substances manufactured or imported at 1,000 tonnes/year or more; substances at 100 tonnes/year or more classified as Aquatic Acute 1 or Aquatic Chronic 1; and substances at one tonne/year or more classified as CMR Category 1A or 1B

31 December 2028

Substances manufactured or imported at 100 tonnes/year or more that are not already subject to the 2026 deadline

31 December 2030

Other substances manufactured or imported at one tonne/year or more


Classification, tonnage and substance identity should be verified at substance and legal-entity level. A commercial product name or an EU REACH registration number is not enough to determine the correct Turkish deadline.


Companies that have completed their Temporary Individual Registrations may request an additional 2-year period from the Ministry if they experience issues during the transition to a joint registration by the deadlines in the table or cannot complete the required information.


Which KKDIK registration route should be selected?


Temporary registration is a bridge to legal and operational continuity. It is not a replacement for full registration and should not be selected simply because it appears faster or cheaper.


However, the Temporary Individual Registration preference is currently seen as the most advantageous solution and is recommended by the Ministry.


Full registration


Full registration is generally the preferred route when the joint-submission structure, data access and complete technical dossier are available. It reduces the need for later remediation, but it requires reliable substance identity, data rights, classification, use and exposure information, and KDU-supported dossier preparation.


Temporary registration as Lead Registrant (TLR in this guide)


This route may be appropriate where a company is acting as Lead Registrant and can submit the relevant temporary joint framework. It carries responsibilities extending beyond the company's own dossier, including communication with prospective members, consistency of substance identity and management of the transition to full registration.


Temporary joint or co-registration (TCR in this guide)


This route may be used by a member registrant where an appropriate temporary Lead submission exists and the registrant can legitimately rely on the relevant joint-submission and data-access arrangements.


Before selecting it, the company should verify:


- that the Lead submission actually exists in KKS;

- that the substance identity and scope match;

- that data-access and cost-sharing conditions are documented;

- that the member's tonnage and uses are correctly reflected; and

- that the Lead has a credible plan for full registration.


Temporary Individual Registration (TIR in this guide)


Temporary Individual Registration provides a continuity route where joint participation is not currently feasible. Typical scenarios include:


- no Lead Registrant has been appointed;

- the Lead dossier has not been submitted;

- the joint-registration group is inactive;

- access to data or a Letter of Access is delayed or unavailable;

- data-sharing terms remain unresolved; or

- the registrant has a documented reason for an individual route.


Missing information should not be omitted. Document the unavailable information, the reason for its unavailability, existing evidence, and the remediation plan with a brief justification in the relevant KKS sections. The dossier must later be updated to meet the applicable full-registration requirements.


A practical route-selection test


Ask these questions for every substance:


  1. Has the substance identity and composition been confirmed?

  2. What is the correct annual tonnage band for the registrant?

  3. Which hazard classifications determine the deadline?

  4. Is a valid Lead submission visible and suitable in KKS?

  5. Are joint-submission and data-use rights available on acceptable terms?

  6. Can the company substantiate its uses, importers and supply-chain scope?

  7. If information is missing, can the gap and remediation plan be properly justified?


The answer may differ from one substance to another. A company-wide decision such as "we will use TIR for everything" is rarely a defensible portfolio strategy.


Why an Only Representative matters for non-Turkish suppliers


A non-Turkish manufacturer, formulator or qualifying article producer may appoint an Only Representative (OR) established in Türkiye to perform the relevant importer obligations under KKDIK.


Where the appointment and coverage are valid, Turkish customers importing the covered products can generally be treated as downstream users for the covered supply. This can provide important strategic benefits:


- centralised control of the Turkish registration portfolio;

- coverage of multiple Turkish importers under one coordinated structure;

- reduced dependence on a single importer;

- stronger protection of customer and tonnage information;

- more consistent registration and supply-chain communication;

- easier onboarding of new importers; and

- continuity when commercial distribution arrangements change.


These benefits are not automatic. They depend on the OR appointment, substance scope, producer identity, annual tonnage, importer list and KKS records remaining accurate and aligned.


When relying on Turkish importers may be insufficient


Leaving registration entirely to importers may be workable in a simple, stable supply chain, but it can create commercial and regulatory dependencies:


- each importer may need its own registration coverage;

- changing importer may create a new compliance gap;

- the foreign supplier may have limited visibility over dossier quality and status;

- customers may take different approaches to substance identity or tonnage;

- registration assets and regulatory relationships may remain with the importer; and

- market-entry decisions may become dependent on a customer's willingness to register.


For an international supplier with several importers, confidential customers or a long-term Turkish market strategy, an OR model is usually more scalable and controllable.


No OR appointed? Doruksistem can map your non-Turkish legal entities, production sites, substances, mixtures and Turkish importers, then determine whether an OR structure would reduce compliance and commercial dependency.


Changing an Only Representative


A non-Turkish company may have legitimate reasons to review or change its OR: poor communication, incomplete portfolio visibility, unclear data rights, weak importer coverage, delayed submissions, high costs, inadequate KKS reporting or an OR arrangement that no longer fits the commercial structure.


Changing the Only Representative (OR) is not as difficult as it seems; it can be accomplished easily by submitting a petition electronically to the Ministry's official email (kep) address.


Considering an OR change? Request a confidential pre-transfer assessment before terminating the current appointment. Doruksistem can identify coverage, data-access and continuity risks while options remain open.


KKS Section 1.7: importer coverage and supply-chain evidence


KKS Section 1.7 is one of the most important operational controls in an OR-managed portfolio. It links the represented non-Turkish supply to the Turkish importers relying on that coverage.


However, adding a company name to an importer list should not be treated as conclusive evidence by itself. Defensible coverage requires consistency across:


- the appointing non-Turkish legal entity;

- the manufacturer or formulator and relevant production site;

- substance identity and composition;

- product-to-substance mapping;

- the covered annual tonnage;

- the Turkish importer and supply flow;

- the registration or temporary-registration status; and

- the scope confirmation issued by the OR.


Common problems include obsolete importer lists, customers linked to the wrong supplier entity, uncovered group companies, incorrect substance mapping, missing tonnage reconciliation and confirmations that do not match the KKS record.


International suppliers should require an auditable process for importer onboarding, annual confirmation, tonnage monitoring, changes in supply source and offboarding.


What evidence should importers and suppliers retain?


International suppliers and their OR should maintain a controlled evidence pack containing, where applicable:


- OR appointment and scope documentation;

- substance identity and composition evidence;

- manufacturer and production-site information;

- importer and product-to-substance mapping;

- tonnage calculations and annual reconciliation;

- KKS submission confirmations and registration numbers;

- payment and Ministry-processing evidence;

- Letters of Access and data-sharing agreements;

- correspondence relating to Lead/member status;

- Turkish SDS and classification documentation; and

- current importer coverage confirmations.


Turkish importers must obtain a coverage confirmation specifying the Only Representative of the non-TR manufacturer or formulator, the relevant substance or product scope, registration status, and any conditions or tonnage limitations. A generic letter stating that a company "is KKDIK compliant" may be insufficient.


KKDIK 2026 readiness checklist


Portfolio and scope


- Confirm every substance on its own and in mixtures.

- Verify CAS/EC identifiers, composition, impurities and sameness.

- Map the non-Turkish legal entity, manufacturing site and Turkish importers.

- Confirm annual tonnage by substance and registrant.

- Check exemptions and intended-release obligations separately.


Registration strategy


- Verify Lead Registrant and joint-submission status in KKS.

- Select full registration, temporary Lead, temporary joint or Temporary Individual Registration- TIR substance by substance.

- Document data-access rights and unresolved information gaps.

- Record the full-registration deadline and remediation plan.


OR and importer governance


- Review the OR appointment, scope and service obligations.

- Reconcile Section 1.7 importer records.

- Establish controlled importer confirmations.

- Review confidentiality, access rights and exit provisions.

- If changing OR, complete the continuity audit before termination.


Submission and follow-up


- Distinguish dossier preparation, approval, submission, payment, Ministry processing and registration-number issuance.

- Verify that payment status has been transferred correctly in KKS.

- Retain submission and correspondence evidence.

- Monitor Ministry requests and update deadlines.

- Maintain the dossier until full registration is completed.


Frequently asked questions about KKDİK


1. What is the 30 September 2026 KKDIK deadline?


The Ministry has announced a milestone to develop the "Turkish Chemical Inventory," which aims to ensure that substances within the registration scope achieve full or temporary registration status in KKS. This initiative operates independently of the statutory full-registration deadlines of December 31, 2026, 2028, and 2030.


2. Does EU REACH registration cover KKDIK?


No. KKDIK is a separate Turkish regime. EU REACH information may support a KKDIK dossier where appropriate and where the registrant has sufficient data-use rights, but a separate Turkish compliance and submission process is required.


3. Do non-Turkish companies have to appoint an Only Representative?


Not in every case. Turkish importers may carry the registration obligation. However, an OR can centralise coverage, protect importer flexibility and give the foreign supplier greater control over its Turkish market-access strategy.


4. Can one OR cover several Turkish importers?


Yes, where the importers fall within a valid appointment and correctly defined substance, supplier, site and tonnage scope. Each covered importer should be accurately maintained in KKS and receive appropriate confirmation.


5. Can one OR appointment automatically cover all group companies and production sites?


No. Corporate affiliation does not automatically create coverage. The appointing legal entity, producer/formulator identity, production sites, substances, importers and tonnage should be expressly mapped and documented.


6. What if no Lead Registrant exists?


The company should not simply wait. It should evaluate whether a properly justified Temporary Individual Registration or another available route is appropriate, while maintaining a plan for later full registration.


7. Is temporary registration the same as full registration?


No. Temporary registration is a bridge mechanism. Missing information and the reasons for it must be documented, and the dossier must later be completed by the applicable statutory deadline.


8. Can a company change its Only Representative before the deadline?


Yes, but the transition should be planned carefully. Appointment scope, KKS records, data rights, importer coverage, tonnage history, payments and pending Ministry actions should be reviewed before terminating the existing OR.


9. Will registration numbers and data rights automatically transfer to a new OR?


Yes, if your Only Representative has just finalized your pre-registrations.


If your Only Representative has completed the Joint registration or been appointed as the Leading company, the OR transfer will automatically occur in the KKS system. However, the former Only Representative must transfer all relevant registration file information, file controls, Letter of Access conditions, fulfilled contract responsibilities, and all related contracts and transactions, including commercial transactions from the joint registration, to the new Only Representative. While issues may arise during this process, addressing them now will lead to sustainable solutions, ultimately saving time and costs in the future.


10. How should an importer prove that its imports are covered?


The importer should retain a current, supplier-specific and substance-specific OR confirmation supported by consistent KKS records and registration evidence. Generic compliance letters may not demonstrate the actual supply-chain scope.


11. What happens to substances first imported after 30 September 2026?


The company should complete the applicable pre-registration and registration (full or Temporary) steps 30 days before manufacture or import and should not rely on an old pre-registration or another supplier's coverage.


12. When should companies begin?


Immediately. Substance identity clarification, portfolio reconciliation, data-access negotiations, OR transitions and KKS processing can take longer than expected. Waiting until September removes the time needed to correct discrepancies.


Conclusion: turn the deadline into a durable Türkiye market-access system


The strongest KKDIK strategy is not simply to obtain a temporary registration number before 30 September 2026. It is to build a controlled system connecting substance identity, registration route, data rights, non-Turkish legal entities, production sites, Turkish importers, tonnage and full-registration obligations.


For international companies, the Only Representative decision is therefore both a regulatory and a market-access decision. A well-governed OR structure can reduce dependency on individual importers, protect confidential commercial relationships and provide a scalable basis for growth in Türkiye. A weak or poorly documented arrangement can create the opposite result.


Non-Turkish consulting or service provider companies that are not established as legal entities in Turkey cannot be appointed as an "Only Representative" nor can they submit a registration declaration. Ensure that your Only Representative is a legal entity established in Turkey and request a valid activity certificate from the company before making your contracts.


doruksistem kkdik registration support

Doruksistem supports international manufacturers, formulators and article producers with:


  • KKDIK portfolio and readiness audits;

  • Only Representative services in Türkiye;

  • Confidential OR-change and transition assessments;

  • Temporary Individual Registration and other KKS submissions;

  • Importer and Section 1.7 coverage governance;

  • Substance identity and technical data-gap review;

  • Certified KDU-supported dossier preparation; and

  • Full-registration roadmaps for 2026, 2028 and 2030,

  • Certified KDU-supported CSR & SDS preparation and approval.


Doruksistem has over 20 years of experience in Regulatory Compliance, assisting international companies with offices and legal entities in Turkey, Germany (EU), the UK, and the USA.


Request a confidential KKDIK 2026 and Only Representative review. When contacting Doruksistem, indicate which situation applies:


- We have not appointed an Only Representative in Türkiye.

- We have an OR but need an independent compliance and coverage review.

- We are considering changing our current OR.


Contact: Doruksistem


"Doruksistem is a member of the Turkish Only Representatives Association."


Sources and regulatory note


This article provides general regulatory information and does not replace a substance-specific legal or technical assessment. Registration scope, deadlines and the appropriate route depend on substance identity, classification, tonnage, legal entity, supply chain, data rights and current Ministry/KKS practice.


Last reviewed: 25 August 2026

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