Downstream user
Also: DU
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Definition
A downstream user uses a substance or mixture in industrial or professional activities without manufacturing or importing it, for example a formulator.
Art. 3(13) REACH
Legal term: downstream user
Explained
REACH defines a downstream user as any natural or legal person established in the EU, other than the manufacturer or the importer, who uses a substance, on its own or in a mixture, in the course of industrial or professional activities. Formulators who blend mixtures count, as do processors and plants that use substances in production. Distributors and consumers are not downstream users under the definition. Downstream users receive safety data sheets from their suppliers. They must apply the information, check exposure scenarios and prepare a new safety data sheet for mixtures of their own. Anyone who places a mixture on the market is at the same time a supplier within the meaning of Article 31 REACH.
See also: Exposure scenario · Safety data sheet · REACH
Sources
As of 11 November 2026. The legal text in force prevails. This entry is not legal advice.