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Candidate List of substances of very high concern for Authorisation

(published in accordance with Article 59(10) of the REACH Regulation)

Candidate List of substances of very high concern for Authorisation


  • Authentic version: Only the Candidate List published on this website is deemed authentic. Companies may have immediate legal obligations following the inclusion of a substance in the Candidate List on this website including in particular Articles 7, 31 and 33 of the REACH Regulation.
  • Numerical identifiers: Each candidate list entry covers both anhydrous and hydrated forms of a substance. The CAS number shown in an entry is typically for the anhydrous form. Hydrated forms of the substance identified by other CAS numbers are still within the scope of the entry.
  • Other numerical identifiers: For those entries with "-" in the EC number and CAS number columns, a non-exhaustive inventory of EC and/or CAS Registry numbers describing substances or groups of substances considered to fall within the scope of the Candidate List entry is included, where practicably possible. This information can be accessed through the "Details" button of the selected entry. 

4-Nonylphenol, branched and linear

substances with a linear and/or branched alkyl chain with a carbon number of 9 covalently bound in position 4 to phenol, covering also UVCB- and well-defined substances which include any of the individual isomers or a combination thereof EC No.: - CAS No.: -
Reason for inclusion
Endocrine disrupting properties (Article 57(f) - environment)
Date of inclusion
IUCLID dataset
Support document
Response to comments

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Group members
This group of substance has the following member substances:
Name EC / List no. CAS no. Association
4-(1-Ethyl-1,3-dimethylpentyl)phenol - 186825-36-5 Official source
Phenol, 4-nonyl-, branched 284-325-5 84852-15-3 Official source
p-nonylphenol 203-199-4 104-40-5 Official source
4-(1-Ethyl-1,4-dimethylpentyl)phenol - 142731-63-3 Official source
p-(1-methyloctyl)phenol 241-427-4 17404-66-9 Official source
p-isononylphenol 247-770-6 26543-97-5 Official source
p-(1,1-dimethylheptyl)phenol 250-339-5 30784-30-6 Official source
4-(1-ethyl-1-methylhexyl)phenol 257-907-1 52427-13-1 Official source
4-(3-ethylheptan-2-yl)phenol 635-696-0 186825-39-8 Expert judgement
Isononylphenol 234-284-4 11066-49-2 Expert judgement
Phenol, nonyl-, branched 291-844-0 90481-04-2 Expert judgement
4-(1,1,5-Trimethylhexyl)phenol 635-388-6 521947-27-3 Expert judgement
Nonylphenol 246-672-0 25154-52-3 Expert judgement

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