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From 1 January 2026, companies placing dangerous mixtures on the Swiss market will be subject to a mandatory UFI requirement for mixtures classified as physical and human health hazard.

This requirement is established under Article 48 of the Swiss Chemicals Ordinance (ChemO). While the Swiss system is similar to EU PCN framework under Article 45 of the CLP Regulation, there are notable Swiss specific obligations that companies must be aware of.

Mandatory Reporting of All Hazardous Mixtures

All hazardous mixtures regardless of end-use (professional or private) must be reported to the Swiss Chemical Products Register (RPC).

The requirement applies to mixtures classified for:

• Physical hazards
• Health hazards
• Environmental hazards*

* For environmentally hazardous mixtures, quantities placed on the market must be reported in tonnage bands.

Full Implementation of the UFI Requirement

The Unique Formula Identifier (UFI) is now mandatory for all products having following hazard classes placed on the Swiss market:

• Physical hazards
• Human health hazards

Mixtures classified only for environmental hazards do not require a UFI.

Companies must print the UFI on the product label or SDS depending upon the product packaging.

For mixtures imported from the EU, an existing EU-generated UFI may remain on the label and be used for reporting in the Swiss RPC. Where a UFI is required and no EU UFI already exists, a Swiss UFI must be generated using the Swiss UFI generator and included on the product label.

While EU-generated UFIs may be used, a separate Swiss reporting remains compulsory.

No General Tonnage Exemption

Switzerland does not provide a general exemption for trivial quantities.
The only quantity related exceptions apply to:

• Intermediates
• Mixtures intended exclusively for professional users

For these cases, a threshold of 100 kg per year applies.

Although non-Swiss companies have no duties pursuant to Swiss legislation, their importers based in Switzerland do. They have the duty to report dangerous substances or preparations to RPC through their main user account. Non-Swiss companies may enter compositions using a sub-user account.

Early preparation will help avoid compliance risks for the Swiss importers and ensure continued market access in Switzerland from 1 January 2026. The UFI must be reported within 3 months from this regulatory deadline.

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