What does the restriction note for AZIRIDINE mean?

The restriction field for AZIRIDINE reads: CMR1B. This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 151-56-4?

CAS 151-56-4 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

InventoryRef 9526523/02/2018

AZIRIDINE

Q: How do I check if my formula contains AZIRIDINE?

Use the INCI Checker tool on CosIng Checker to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

Azacyclopropane,Ethylenimine

AZIRIDINE is linked to 1 EU annex record on this page. Inventory note: CMR1B.

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Inventory details for AZIRIDINE

INCI name

AZIRIDINE

Description

Azacyclopropane,Ethylenimine

Annex records for AZIRIDINE

Annex II Shared CAS number

Entry 733

Aziridine

CAS: 151-56-4

EC: 205-793-9

Key data

CAS

151-56-4

205-793-9

Restriction

CMR1B

Function

NOT REPORTED

How AZIRIDINE appears in the CosIng inventory

The CosIng inventory lists AZIRIDINE as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

AZIRIDINE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

AZIRIDINE appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for AZIRIDINE reads: "CMR1B". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, AZIRIDINE carries the following function designation(s):

NOT REPORTED

CAS 151-56-4 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Use the INCI Checker tool to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

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Source note for AZIRIDINE

This page combines the CosIng inventory entry for AZIRIDINE with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research AZIRIDINE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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Tools & next steps

Check your formula

Scan a full INCI list to detect AZIRIDINE and any linked EU annex restrictions or allergen flags.

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Search similar ingredients

Find other inventory ingredients and annex entries related to AZIRIDINE, its identifiers or nearby name variants.