Fragrance avoidance
Not a strong fit for fragrance avoidance because it carries Fragrance.
The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.
- beauty
- industrial
4-tert-Butylcatechol
CAS 98-29-3 · 100/100 · High conf.
Fragrance · Polymerization initiators / inhibitors / catalysts>inhibitors
Concern score
100/100Critical concern based on regulatory listings.
Well researched
Why it's flagged
4-tert-Butylpyrocatechol is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.
RestrictedEU EC — banned
The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.
Regulation
Restrictions first, then routine listings from published regulatory sources.
- commercial_presence
- cpdat_category:industrial
- definition_level:complete
- definition_type:primary
- eu_annex:II
- eu_cosmetic_banned
- ingredient_type:ingredient substance
- occupational_presence
- View source →banned
EUEC
Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.
USEPAcommercial use observedEPA CPDat observed this chemical in 11 composition records across product categories including Laboratory supplies, Specialty occupational products, Raw materials. EPA CPDat classifies this chemical for functional uses including Fragrance, polymerization initiators / inhibitors / catalysts>inhibitors.
- EPA CPDat observed this chemical in 11 composition records across product categories including Laboratory supplies, Specialty occupational products, Raw materials. EPA CPDat classifies this chemical for functional uses including Fragrance, polymerization initiators / inhibitors / catalysts>inhibitors.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →
Evidence
No graded sources yet for 4-tert-Butylcatechol. We publish evidence only once a source is linked and reviewed — this ingredient is in the catalog, but has not been assessed.
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Avoid
Where it appears
Prevalence of 4-tert-Butylcatechol in our catalog (epa_cpdat).
Products
11
Brands
5
Laboratory suppliesSpecialty occupational productsRaw materials
Typical roles
FragrancePolymerization initiators / inhibitors / catalysts>inhibitors