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Candidate List updated with eight hazardous chemicals


The Candidate List of substances of very high concern now contains 219 chemicals that may harm people or the environment.

Helsinki, 8 July 2021 – Some of the newly added substances are used in consumer products such as cosmetics, scented articles, rubber and textiles. Others are used as solvents, flame retardants or to manufacture plastics products. Most have been added to the Candidate List because they are hazardous to human health as they are toxic for reproduction, carcinogenic, respiratory sensitisers or endocrine disruptors.

Companies must follow their legal obligations and ensure the safe use of these chemicals. They also have to notify ECHA under the Waste Framework Directive if their products contain substances of very high concern. This notification is submitted to ECHA’s SCIP database and the information will later be published on the Agency’s website.

Entries added to the Candidate List on 8 July 2021:

# Substance name EC number CAS number Reason for inclusion Examples of use(s)
1 2-(4-tert-butylbenzyl)propionaldehyde and its individual stereoisomers
- -

Toxic for reproduction
(Article 57 c) 

Cleaning agents, cosmetics, in scented articles, polishes and wax blends.

2 Orthoboric acid, sodium salt  237-560-2 13840-56-7

Toxic for reproduction
(Article 57 c) 

Not registered under REACH.
May be used as solvent and corrosion inhibitor.


2,2-bis(bromomethyl)propane1,3-diol (BMP);

2,2-dimethylpropan-1-ol, tribromo derivative/3-bromo-2,2-bis(bromomethyl)-1-propanol (TBNPA);

2,3-dibromo-1-propanol (2,3-DBPA)








(Article 57 a)

BMP: manufacture of polymer resins and in one component foam (OCPF) application.

TBNPA: polymer production manufacture of plastics products, including
compounding and conversion and as an intermediate.

DBPA: registered as an intermediate.

4 Glutaral 203-856-5 111-30-8 Respiratory sensitising properties (Article 57f - human health) Biocides, leather tanning, x-ray film processing, cosmetics.
5 Medium-chain chlorinated paraffins (MCCP) 
(UVCB substances consisting of more than or equal to 80% linear chloroalkanes with carbon chain lengths within the range from C14 to C17)
- -

PBT (Article 57d)

vPvB (Article 57e)

Flame retardants, plasticising additives in plastics, sealants, rubber and textiles.

Phenol, alkylation products (mainly in para position) with C12-rich branched alkyl chains from oligomerisation, covering any individual isomers and/ or combinations thereof (PDDP)

- - Toxic for reproduction (Article 57c)
Endocrine disrupting properties (Article 57f - human health and environment)
Preparation of lubricant additive materials and of fuel system cleaners.
7 1,4-dioxane 204-661-8 123-91-1 Carcinogenic
(Article 57a)
Equivalent level of concern having probable serious effects to the environment (Article 57f -environment) 
Equivalent level of concern having probable serious effects to human health (Article 57f –human health)
8 4,4'-(1-methylpropylidene)bisphenol 201-025-1 77-40-7 Endocrine disrupting properties (Article 57f - human health and environment) Not registered under REACH. 
May be used in manufacture of phenolic and polycarbonate resin.

Note: due to a technical error, the EC entry 251-823-9, EC name: tetrahydro-4-methylphthalic anhydride was mistakenly associated to an earlier Candidate List entry Hexahydromethylphthalic anhydride [including cis- and trans- stereo isomeric forms and all possible combinations of the isomers]. The associated substance tetrahydro-4-methylphthalic anhydride has now been removed from the Candidate List. The substance infocard and brief profile are being updated accordingly. We apologise for any inconvenience this may have caused.


The Candidate List includes substances of very high concern that may have serious effects on our health or the environment. These substances may be placed on the Authorisation List in the future, which means that companies would need to apply for permission to continue using them. The Candidate List has now 219 entries – some of these cover groups of chemicals so the overall number of impacted chemicals is higher.

Under the REACH Regulation, companies may have legal obligations when their substance is included – either on its own, in mixtures or in articles – in the Candidate List. Any supplier of articles containing a Candidate List substance above a concentration of 0.1 % weight by weight has to give sufficient information to their customers and consumers to allow safe use. 

Importers and producers of articles containing a Candidate List substance have six months from the date of its inclusion in the list (8 July 2021) to notify ECHA. 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.

As of 5 January 2021, suppliers of articles on the EU market containing Candidate List substances in a concentration above 0.1% weight by weight must notify these articles to ECHA’s SCIP database. This duty comes from the Waste Framework Directive. 

More information on these obligations and related tools are available on ECHA’s website.