Chemicals Registration System (CRS/KKS)
KKDIK (TURKREACH) and Chemicals Registration System, CRS/KKS
CHEMICAL REGISTRATION SYSTEM (KKS)
General
CRS/KKS is a web application operated by the Ministry in order to create a registration of chemicals manufactured and/or imported by industrialists and to make the necessary evaluations. KKS is based on the IUCLID format; please check the Ministry’s Chemicals Help Desk for the currently supported IUCLID version.
Industrial users registered in the system, through KKS;
- Managing company and facility information
- Creating substance registrations
- To reach the contact information of other companies with the same susbtance by making a SIEF/MBDF inquiry
- Sending the substance registrations to the Ministry and inquiring about the status of the submitted registrations
They can perform such actions through their own accounts.
Current status (October 2026): KKS is used for pre-MBDF notifications, MBDF processes and the submission of temporary and full registration dossiers. Following the Ministry’s announcement of 6 March 2026, the temporary registration period ended on 30 September 2026. Full registration dossiers must be submitted via KKS by 31 December 2026, 31 December 2028 or 31 December 2030, depending on the tonnage band. For details, see our KKDIK 2026 Temporary and Full Registration Guide.
Required Programs and Settings
Since KKS is a web-based application, there is no need to install any application on the local system.
KKS; It can be used via up-to-date versions of Firefox, Chrome, Opera and Microsoft Edge.
Entry to the KKS can be made by entering the National Environmental Information System (NEIS/UCBS) of the Ministry of Environment, Urbanization and Climate Change (MoEUCC). Instructions on how to log in to UCBS, how to log in to applications, etc., can be found at the help desk on the UCBS login page (https://ucbs.cevre.gov.tr). In addition, the UCBS flow chart can be accessed among the guide documents available at the Chemicals Help Desk of the Ministry (MoEUCC).
Logging in to KKS
In order to use the KKS, it is necessary to have access authority by defining a username and password in the UCBS.
KKS is an application that works through the UCBS. The following steps should be followed to enter the KKS application via UCBS.
- On the UCBS login screen, select “Turkish Citizen Login”
- By clicking the “Login with e-Government” button on the UCBS login screen, e-Government information is entered
- After logging in to the UCBS, the “Chemical Registration System” application is selected from the screen showing the applications on the main page
- “Company” is selected as the entry type to the KKS application
- In the window that opens, the go to application button is pressed and the system directs the user to the KKS application
Example screens for these steps are given below.
In short, KKS is the system opened to perform operations such as sending Substance Registrations (pre-SIEF, C&L, KKDIK dossier, etc) to the Ministry and querying the status of the sent registrations.
The CRS/KKS system is available on the UCBS website. The system works only in Turkish and can be used by Turkish citizens with TURKIYE e-government access.
You can visit our TUKREACH PORTAL for more information.