What other records share CAS 108-10-1?

CAS 108-10-1 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 3535915/10/2010

MIBK

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

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.

4-Methylpentan-2-one

MIBK is linked to 1 EU annex record on this page.

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Inventory details for MIBK

INCI name

MIBK

INN name

methyl isobutyl ketone

Description

4-Methylpentan-2-one

Annex records for MIBK

Annex II Shared CAS number

Entry 1689

4-methylpentan-2-one; isobutyl methyl ketone (MIBK)

CAS: 108-10-1

EC: 203-550-1

Key data

CAS

108-10-1

203-550-1

Restriction

—

Function

DENATURANT PERFUMING SOLVENT

How MIBK appears in the CosIng inventory

The CosIng inventory lists MIBK 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.

MIBK is also tagged with 3 cosmetic functions 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

MIBK 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.

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

CAS 108-10-1 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 MIBK

This page combines the CosIng inventory entry for MIBK 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 MIBK 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

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Search similar ingredients

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