Regulatory data is for reference only. Always verify with the official regulator before making formulation decisions. Last refreshed: 10/12/2026.
Ingredients/4-methylpentan-2-one; isobutyl methyl ketone (MIBK)
4-methylpentan-2-one; isobutyl methyl ketone (MIBK)CAS 108-10-1
EU CosIng II — prohibitedUK OPSS — prohibited
Is 4-methylpentan-2-one; isobutyl methyl ketone (MIBK) restricted in cosmetics?
4-methylpentan-2-one; isobutyl methyl ketone (MIBK) is prohibited in EU CosIng and UK OPSS. Markets not named here hold no entry for it, which is not a clearance.
- CAS
- 108-10-1
- INCI
- 4-methylpentan-2-one; isobutyl methyl ketone (MIBK)
- Data refreshed
- 2026-10-12
Regulatory status
What this means
4-methylpentan-2-one; isobutyl methyl ketone (MIBK) has regulatory signals in EU CosIng, UK OPSS. Review the source links above for the official conditions and latest updates.
Recent regulatory changes
No recorded regulatory changes for 4-methylpentan-2-one; isobutyl methyl ketone (MIBK) yet.
Common questions
- Is 4-methylpentan-2-one; isobutyl methyl ketone (MIBK) restricted in EU cosmetics?
- 4-methylpentan-2-one; isobutyl methyl ketone (MIBK) is prohibited in EU cosmetics according to EU CosIng Annex II.
- Is 4-methylpentan-2-one; isobutyl methyl ketone (MIBK) restricted in UK OPSS?
- 4-methylpentan-2-one; isobutyl methyl ketone (MIBK) is prohibited in cosmetics under UK OPSS.
- What is the CAS number for 4-methylpentan-2-one; isobutyl methyl ketone (MIBK)?
- The CAS number for 4-methylpentan-2-one; isobutyl methyl ketone (MIBK) is 108-10-1.
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