3,3-Bis(4-hydroxyphenyl)phthalide (Phenolphthalein (INN))
3,3-Bis(4-hydroxyphenyl)phthalide (Phenolphthalein (INN)) is listed in Annex II as a prohibited substance for cosmetic products placed on the EU market.
Chemical identity and properties

Phenolphthalein
Phenolphthalein is a member of phenols. It is functionally related to a 2-benzofuran-1(3H)-one. — ChEBI
- IUPAC name
- 3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one
- Molecular formula
- C20H14O4
- Molecular weight
- 318.3 g/mol
- Exact mass
- 318.08920892 Da
- XLogP3
- 3.6
- Topological polar surface area
- 66.8 Ų
- Hydrogen-bond donors
- 2
- Hydrogen-bond acceptors
- 4
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:34914
- ChEMBL:CHEMBL63857
- EPA DTXSID:DTXSID0021125
- PubMed:23041872
- PubMed:23037998
- PubMed:23001288
- PubMed:22975400
- PubMed:22902504
- PubMed:22862562
- PubMed:22784191
- PubMed:22675455
- PubMed:22645489
- PubMed:22629096
- PubMed:22615669
- PubMed:22559521
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Record details
Chemical name
3,3-Bis(4-hydroxyphenyl)phthalide (Phenolphthalein (INN))
Regulatory information
Other directives
(EC) 2009/790
Identified ingredients
CMR
| Category | Carcinogenic | Mutagenic | Reprotoxic |
|---|---|---|---|
| Cat. 1A | ✓ C=>1% | — | — |
| Cat. 1B | ✓ | — | — |
| Cat. 2 | — | ✓ | ✓ |
Key data
Inventory links for 3,3-Bis(4-hydroxyphenyl)phthalide (Phenolphthalein (INN))
Related records for 3,3-Bis(4-hydroxyphenyl)phthalide (Phenolphthalein (INN))
Direct matches are limited for this record, so nearby entries from Annex II are shown as well.
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Nitrosamines e.g. Dimethylnitrosoamine; Nitrosodipropylamine; 2,2'-(Nitrosoimino)bisethanol
What Annex II means for 3,3-Bis(4-hydroxyphenyl)phthalide (Phenolphthalein (INN))
3,3-Bis(4-hydroxyphenyl)phthalide (Phenolphthalein (INN)) is listed as a prohibited substance under Annex II of EU Cosmetics Regulation 1223/2009 and must not be intentionally added. Article 17 separately addresses unintended small quantities that are technically unavoidable under good manufacturing practice and compatible with the Article 3 safety requirement.
Formulators must screen their ingredients and raw materials to ensure none contain this substance. Suppliers should provide documentation confirming absence when requested.
This record is linked to 1 CosIng inventory ingredient for name and identifier cross-reference. The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.
Compliance checklist
- Verify this substance is absent from all raw materials and finished formulations.
- Request absence confirmation or CoA from raw material suppliers.
- Document the screening result in the Product Information File (PIF).
- This substance has CMR classification. Review the CMR table above and verify current Annex II/III status before use.
Frequently asked questions
Source note for Annex II record 3,3-Bis(4-hydroxyphenyl)phthalide (Phenolphthalein (INN))
This page summarizes one Annex II record for 3,3-Bis(4-hydroxyphenyl)phthalide (Phenolphthalein (INN)) from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.
Use this record page to review Annex II conditions for 3,3-Bis(4-hydroxyphenyl)phthalide (Phenolphthalein (INN)), but confirm any final regulatory decision against the current official annex wording and source files.
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