2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)
Other
Avoid
CAS Number: 1746-01-6
About 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)
One of the most toxic man-made chemicals known; an extremely potent carcinogen and dioxin banned from all cosmetic products worldwide.
Detailed Analysis
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD, CAS 1746-01-6, PubChem CID 15625) is among the most toxic synthetic chemicals known. It is classified by IARC as a Group 1 carcinogen (known human carcinogen) and by the EU as a CMR (Carcinogenic, Mutagenic, toxic to Reproduction) Category 1B substance. TCDD is listed in EU CosIng Annex II (banned substances) for all cosmetic uses. The extensive hazard statements (H300, H319, H350, H360, H370, H372, H410 etc.) reflect its acute toxicity, organ toxicity, and environmental hazard. No cosmetic use is permitted.
Known Concerns
- ⚠ EU Annex II banned substance — no cosmetic use permitted
- ⚠ Known human carcinogen (IARC Group 1)
- ⚠ CMR Category 1B classification
- ⚠ Acute toxicity (H300), serious eye damage (H319)
- ⚠ Organ toxicity (H370, H372), reproductive toxicity (H360)
- ⚠ Very toxic to aquatic life (H410)
Safety Score
Avoid
Based on EU regulatory data, published safety research, and ingredient function analysis.
References
EU CosIng Database
European Commission cosmetic ingredient registry
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