On June 12, 2025, the Common Market of the South (Mercosur) adopted Resolution GMC No. 05/25, establishing a new technical regulation for the definition, classification, composition requirements, and labeling of cleaning products within the bloc. The measure applies to Argentina, Brazil, Paraguay, and Uruguay and reflects Mercosur's ongoing efforts to harmonize technical standards across member countries.

Scope and Product Coverage

The new regulation introduces updated definitions that cover a broad category of non-industrial cleaning products. These include, but are not limited to, products traditionally used for household cleaning, as well as those intended for vehicle care, shoe maintenance, and other similar purposes. Industrial or institutional use products are explicitly excluded from the scope.

Risk-Based Classification Framework

A key feature of the regulation is its alignment with the risk-based approach introduced by Mercosur in Resolution GMC No. 36/22. Under this framework, cleaning products are classified into two categories: Risk I for products considered low risk, and Risk II for those presenting a higher level of risk. This approach replaces the previous system, which relied on closed lists of covered products. To date, Uruguay is the only member country that has incorporated the risk-based framework into its national legislation.

Substance Restrictions

Resolution 05/25 introduces specific prohibitions on certain substances in cleaning product formulations. Ingredients such as methanol, nonylphenol and its ethoxylates, and sodium tripolyphosphate are now explicitly banned due to environmental and health concerns.

Next Steps: National Implementation Required

It is important to highlight that the new regulation does not enter into force automatically. Each of the four member states must incorporate the provisions of the resolution into their domestic legal frameworks by December 9, 2025. Until that process is complete, the requirements established by the new rule remain inoperative.

Industry Implications

Companies that manufacture, import, or distribute cleaning products in Argentina, Brazil, Paraguay, or Uruguay should begin preparations to comply with the forthcoming national regulations. This includes reviewing product formulations, verifying compliance with labeling requirements, and assessing product classification under the Risk I and Risk II categories.

Towards Greater Regulatory Convergence

The adoption of Resolution 05/25 represents a significant step toward regulatory convergence within Mercosur and reflects the bloc's commitment to modernizing the oversight of cleaning products. Stakeholders in the sector are advised to closely monitor the transposition process in each member country and take the necessary steps to ensure compliance within the established timeframe.