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AZIRIDINE.

Avoid CAS 151-56-4 / NOT REPORTED

Aziridine is a highly reactive three-membered heterocyclic compound primarily utilized as a monomer for industrial polymers and a chemical intermediate. Due to its potent mutagenic properties and status as a known carcinogen, it is strictly prohibited from use in all cosmetic and skincare applications globally.

Industrial cross-linking agent Chemical intermediate

Science

As a powerful alkylating agent, Aziridine functions through the opening of its strained nitrogen-containing ring, which subsequently binds to the N7 position of guanine in DNA. This process induces interstrand cross-linking and structural breaks, leading to irreversible cellular damage, apoptosis, and potential genetic mutations.


Research

High confidence
Effective range N/A
Optimal

0%

Key findings

  1. 01 Clinical data is restricted to toxicological assessments and antineoplastic research; no skincare efficacy studies exist as the substance is a banned toxin.

Transparency

Not commonly dusted

Aziridine is not a cosmetic ingredient; its presence at any concentration would constitute a severe regulatory violation rather than a 'dusting' issue.


The Formula

Solubility
Water
Optimal pH 7.2 – 9.5
0 7 14

Stability

Highly unstable in acidic conditions (pH < 7.0), which triggers a rapid and potentially violent exothermic ring-opening reaction. It is only stable in alkaline environments and must be shielded from heat to prevent polymerization.

Conflicts

  • Acids
  • Protic solvents
  • Oxidizing agents
  • Nitrosating agents

Safety

CIR Status
Not reviewed
Max tested
0%
Pregnancy
Caution
Sensitization risk High

Aziridine is classified as a Group 2B carcinogen by the IARC and is explicitly banned in cosmetics under EU Annex II (Entry 733) and ASEAN regulations. Dermal exposure even at 0.01% can cause severe corrosion and systemic toxicity.


Your Skin

No Normal
No Dry
No Oily
No Sensitive
Irritancy High
Comedogenicity Unknown

Our Assessment

Avoid

A hazardous industrial chemical and carcinogen that is strictly prohibited for use in skincare due to extreme toxicity and mutagenic risk.


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