Is Dibenzothiophene safe in cosmetics?
Dibenzothiophene has a safety rating of "POOR" in our database. EU status: prohibited. US status: permitted.
POOR
Cosmetic Ingredient
Dibenzothiophene
Also known as: (1,1'-Biphenyl)-2,2'-diyl sulfide, Dibenzo(b,d)thiophene, EINECS 205-072-9, UNII-Z3D4AJ1R48, alpha-thiafluorene
INCI: DIBENZOTHIOPHENE
Dibenzothiophene (CAS 132-65-0) is a cosmetic cosmetic ingredient functioning as Not a recognized cosmetic ingredient — polycyclic aromatic sulfur heterocycle;. EU Regulation 1223/2009 status: prohibited. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and pharmaceutical data.
Cross-Vertical Regulatory Divergence
Dibenzothiophene is prohibited in EU cosmetics but has active industrial GHS classifications (H302, H371, H311, H315, H331, H332, H400, H410).
Source: Cosmetics: ingredients.eu status; Chemicals: ghs classifications.signal word/hazard statement code
Function
Not a recognized cosmetic ingredient — polycyclic aromatic sulfur heterocycle; industrial/analytical use only
Editorial assessment
POOR
Preliminary editorial note — not a computed safety verdict.
Chemistry & Identifiers
IUPAC Name
dibenzothiophene
InChIKey
IYYZUPMFVPLQIF-UHFFFAOYSA-N
Regulatory Status
EU EU Status
prohibited
US US Status
permitted
US Notes
Not recognized for cosmetic use — no CIR monograph; EPA has provisional toxicity values
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Dibenzothiophene.
Calculate MoS for your specific formulation with the MoS Calculator.
IARC Carcinogenicity
International Agency for Research on Cancer (WHO) monograph evaluation.
IARC Group
3
Volume
103
Evaluation Year
2011
PubChem Annotations
Safety and regulatory annotations from PubChem (NCBI) aggregated sources.
Safety (1)
Carcinogen Classification
Dibenzothiophene | Group 3: Not classifiable as to its carcinogenicity to humans | Volume 103: (2013) Bitumens and Bitumen Emissions, and some N- and S-Heterocyclic Aromatic Hydrocarbons
Source: International Agency for Research on Cancer (IARC)
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Antioxidant
Editorial summary
Preliminary editorial summary for Dibenzothiophene — not a computed safety verdict. See the sourced toxicological data above.
Regulatory Flags
endocrine_disruptor
Known Synonyms
(1,1'-Biphenyl)-2,2'-diyl sulfide
Dibenzo(b,d)thiophene
EINECS 205-072-9
UNII-Z3D4AJ1R48
alpha-thiafluorene
Chemical Function
Antioxidant
Australian Status
AICIS status: listed
Cross-Vertical Safety Context
Same-CAS public records found in pharmaceutical data.
SOURCE
ChEMBL / DrugCentral / FAERS
DB_PHARMA CAS match
Pharmaceutical Data
Same-CAS rows from the pharmaceutical spoke database.
Compound
DIBENZOTHIOPHENE
ChEMBL ID
CHEMBL219828
Max Phase
-1
Frequently Asked Questions
Is Dibenzothiophene allowed in the EU?
Dibenzothiophene EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.
What does Dibenzothiophene do in cosmetics?
Dibenzothiophene functions as: Not a recognized cosmetic ingredient — polycyclic aromatic sulfur heterocycle; industrial/analytical use only. It is classified as a cosmetic ingredient in our database. CAS number: 132-65-0.
Is Dibenzothiophene used outside cosmetics?
Dibenzothiophene also appears in industrial chemical safety and pharmaceutical data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Does Dibenzothiophene have different safety status in cosmetics vs industrial chemicals?
Dibenzothiophene is prohibited in EU cosmetics but has active industrial GHS classifications (H302, H371, H311, H315, H331, H332, H400, H410).
Compliance Tools
Check Dibenzothiophene compliance across multiple jurisdictions:
Ingredient Decoder
Paste a full ingredient list for instant analysis
82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
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