On December 12, 2025, the Official Journal of the European Union formally published the Regulation (EU) 2025/2455 on an EU Common Data Platform for Chemicals. This regulation mandates the establishment of a unified EU Chemicals Data Platform by January 2, 2029. The platform aims to integrate all chemicals-related data, ensuring it is Findable, Accessible, Interoperable, and Reusable (FAIR principles), and to establish chemical monitoring and early warning mechanisms to enhance the protection of human health and the environment.

I. Background
The EU's chemical regulatory system is complex, with data scattered across various agencies (e.g., ECHA, EFSA, EEA, EMA, EU-OSHA) and Member States. This leads to data duplication, inconsistent assessments, and insufficient public trust. To improve the consistency and scientific basis of chemical risk assessments, reduce administrative burdens, minimize animal testing, support the goals of a "Toxic-Free Environment" and the "Green Deal," and establish a transparent mechanism to build public trust, the EU decided to create a unified data platform.
II. Establishment of the "Common Data Platform"
1. Responsible Entity: The European Chemicals Agency (ECHA) is responsible for the platform's construction and maintenance.
2. Data Scope:
a) Legally Required Data: Data generated or submitted under EU legislation listed in Annex I and held by ECHA, EEA, EFSA, EMA, EU-OSHA, or the European Commission.
b) Project/Research Data: Chemical data from EU, Member State, or international research projects, if received by the aforementioned agencies.
c) Voluntarily Submitted Data: Data voluntarily provided and accepted from Member States, third countries, research institutions, etc.
Exclusions (Data NOT included in the platform):
- Specific composition details of mixture formulations under Article 45 of the CLP Regulation.
- Information from Cosmetic Product Notifications (CPNP).
- Internal working/decision documents of agencies (unless otherwise specified).
III. Dedicated Service Modules
- IPCHEM (Monitoring Data)
- Reference Values
- Study Notifications
- Regulatory Processes
- Chemicals in Articles/Products
- Alternatives to Substances of Concern
- Legal Obligations Finder
- Standard Formats & Controlled Vocabularies
- Environmental Sustainability Data
IV. Access Rights
User Type | Access Rights |
Public | Free access to non-confidential data; downloadable and machine-readable. |
Regulatory Authorities | Access to all data, including confidential data, for enforcement, assessment, and policy-making. |
Businesses & Third Parties | No direct access to confidential data; can apply for access under Regulation (EC) No 1049/2001. |
V. Timeline
Action | Deadline |
Implementation Plan (specifying datasets and rollout schedule) | To be published by July 2, 2026 |
Platform Launch (all core datasets must be integrated) | By January 2, 2029 |
Integration of Historical Data (data generated before 2026) | To be completed by January 2, 2036 |
Study Notification Obligation (companies must register commissioned studies) | Effective from November 2, 2027 |
Human Biomonitoring Studies (EU-wide surveys on human chemical exposure) | To be launched by January 2, 2030 |
This regulation will enter into force automatically on January 2, 2026 (20 days after its publication in the Official Journal). The establishment of the Common Data Platform is expected to bring significant convenience to businesses by substantially improving the accessibility and efficiency of retrieving chemicals-related data.
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Further Information

