4-METHYLPENTANE-2,3-DIONE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

4-METHYLPENTANE-2,3-DIONE

Safety grade: A

This is a synthetic fragrance chemical that has a buttery, creamy scent. It is used in small amounts to give cosmetic products a pleasant aroma.

It is used in cosmetic products as a fragrance ingredient to add or enhance a specific scent to the formula.

Graded using: COSING.

Last verified: May 26, 2026