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ECHA adds two hazardous chemicals to Candidate List


The Candidate List of substances of very high concern now contains 235 entries for chemicals that can harm people or the environment. Companies are responsible for managing the risks of these chemicals and giving customers and consumers information on their safe use. 

Helsinki, 14 June 2023 - ECHA has added two new chemicals to the Candidate List. One is toxic for reproduction and the other has very persistent and very bioaccumulative hazardous properties. They are used, for example, in inks and toners and in the production of plastic products.   

Entries added to the Candidate List on 14 June 2023:

# Substance name EC number CAS number Reason for inclusion Examples of use(s)

Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide

278-355-8 75980-60-8

Toxic for reproduction (Article 57c)

Inks and toners, coating products, photo-chemicals, polymers, adhesives and sealants and fillers, putties, plasters, modelling clay.  


Bis(4-chlorophenyl) sulphone

201-247-9 80-07-9

(Article 57 e)

Manufacture of chemicals, plastic products and rubber products.


The Candidate List now has 235 entries – some are groups of chemicals so the overall number of impacted chemicals is higher. 

These substances may be placed on the Authorisation List in the future. If a substance is on that list, its use will be prohibited unless companies apply for authorisation and the European Commission authorises them to continue its use.

Consequences of the Candidate List

Under REACH, companies have legal obligations when their substance is included – either on its own, in mixtures or in articles – in the Candidate List. 

Suppliers of articles containing a Candidate List substance above a concentration of 0.1 % (weight by weight) have to give their customers and consumers information to be able to use them safely. Consumers have the right to ask suppliers whether the products they buy contain substances of very high concern.

Importers and producers of articles will have to notify ECHA if their article contains a Candidate List substance within six months from the date it has been included in the list (14 June 2023). Suppliers of substances on the Candidate List, supplied either on their own or in mixtures, have to provide their customers with a safety data sheet.

Under the Waste Framework Directive, companies also have to notify ECHA if the articles they produce contain substances of very high concern in a concentration above 0.1 % (weight by weight). This notification is published in ECHA’s database of substances of concern in products (SCIP).



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