According to the Royal Decree of 27 May 2014, companies have to register the nanomaterials they place on the market. Substances produced in nanoparticular state (such as titanium dioxide, zinc oxide) have to be registered before January 1st, 2016. Mixtures containing such substances (e.g. paints, sun creams), have to be registered before January 1st, 2017.

Annual reporting

First results

For the calendar year 2016, 475 registrations were submitted by 98 registrants. These registrations involve about 150 different chemical substances (based on CAS-number). In total, 75 000 tons of substances, produced in nanoparticular state, were introduced on the Belgian market, either by import or by production. The substances imported and/or produced in a quantity above 1 000 ton are amorphous silica, calcium carbonate, calcium carbonate treated with stearic acid, carbon black, diiron trioxide, iron hydroxide oxide yellow and silicon dioxide. These numbers result only from the registrations submitted for nanomaterials, placed on the market as substances.

Stakeholders meeting 18 april 2017 :

Evaluation of the nanoregister data by Sciensano

Nanoregistre BE : Analyse du fonctionnement et évaluation de l’opportunité de mise en œuvre du Chapitre 3 de l’arrêté royal du 27 mai 2014 (Pr J. LALOY et A. DE GROOTE, UNamur, 2022)

Nanoregister BE: Analyse van de werking en evaluatie van de opportuniteit van de uitvoering van Hoofdstuk 3 van het KB van 27 mei 2014 (Pr J. LALOY et A. DE GROOTE, UNamur, 2022)


Workshop: nano in Belgium

Why ?

Nanomaterials contain extremely small particles (smaller than 100 nm) and have specific physical and chemical properties that are different from the properties of the same materials without nanoparticles. Nanomaterials are very different, their impact on man and on the environment can also vary a lot. The register aims at mapping out nanomaterials so that possible risks can be identified in a more specific way and, in case of problem, to ensure a quicker response. Employers also have the obligation to supply their workers with information about nanomaterials that, according to this Royal Decree, should be registered.

The registration only applies to the deliberately manufactured nanomaterials with a size between 1 and 100 nm. The difference between "deliberately manufactured" is not always obvious. The fine particles that we find in the air through combustion (for example of motors) or nanomaterials that result from welding can be considered as by-products of human activities and should not be registered.

The following documents can help you for the registration of nanomaterials. Also, you can always contact the help desk at

The changes laid down in the RD of 22 December 2017 are not yet included in these documents.


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