Food use
Food-use source coverage is present in the current record.
The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.
- beauty
- cleaning
- food
- industrial
Mibk
CAS 108-10-1 · 100/100 · High conf.
Also registered as 1 other CAS number
1338234-91-5
Concern score
100/100Critical concern driven by cmr.
High confidence
Mibk in plain language
Also known as Methyl isobutyl ketone · 4-METHYL-2-PENTANONE · Isopropylacetone · Methylisobutylketone · 4-methylpentan-2-one; isobutyl methyl ketone (MIBK) · 4-Methylpentan-2-one
Show all 27 names
2-Methyl-4-pentanone · 2-Methylpropyl methyl ketone · 2-Pentanone, 4-methyl- · 4-METHYL-2-PENTANON · 4-Methyl-2-oxopentane · 4-methyl-2-pentanone, hexanone · Hexon · Hexone · Isobutyl methyl ketone · Isobutyl-methylketon · Isohexanone · Isopropyl acetone · Methyl-isobutyl-cetone · Methylisobutylketon · Metilisobutilchetone · Metyloizobutyloketon · Shell mibk · methyl isobutyl ketone (sara 313) (cercla)(vp = 15 @ 68f) · methyl isobutyl ketone (sara iii) · methyl isobutyl ketone (sara 313) (vp: 15 mmgh @ 68f) · n-butyl acetate (vp = 13 @ 68f)
Used in cosmetics as a solvent, a fragrance ingredient and a denaturant.
- Solvent
- Perfuming
- Denaturant
- Fragrance
- Flavouring
- Critical concern: classified for carcinogenic, mutagenic or reproductive toxicity (CMR). It is banned in EU cosmetics.
Why it's flagged
- Cmr
4-methylpentan-2-one; isobutyl methyl ketone (MIBK) is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.
RestrictedEU EC — banned
The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.
Regulation
Restrictions first, then routine listings from published regulatory sources.
- EU Annex II — prohibited
- EU prohibited in cosmetics
- Found in consumer products
- Cleaning
- Pharma
- Food
- Industrial
- View source →banned
EUEC
Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products. CMR: Carcinogenic Cat. 2()
USEPAcommercial use observedEPA CPDat observed this chemical in 4754 composition records across product categories including Furniture and furnishings, Raw materials, Home maintenance. EPA CPDat classifies this chemical for functional uses including Solvent, Fragrance, Flavouring and nutrient.
- EPA CPDat observed this chemical in 4754 composition records across product categories including Furniture and furnishings, Raw materials, Home maintenance. EPA CPDat classifies this chemical for functional uses including Solvent, Fragrance, Flavouring and nutrient.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →
Expert safety opinions
No expert opinion on file for Mibk. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.
SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.
Evidence & sources
No graded research studies for Mibk yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Where this comes from
- Open →
CosIng
regulatory · updated 2026-09-23
- Open →
EU CosIng Cosmetics Regulation Annexes
regulatory · updated 2022-11-11
- Open →
EPA Chemical and Products Database
exposure · updated october 24, 2019
- Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
- Open →
FDA GSRS UNII
registry · updated 2026-02-26
- Open →
openFDA Substance
registry · updated 2026-05-24
- Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Good fit
Fragrance avoidance
Not a strong fit for fragrance avoidance because it carries Fragrance.
The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.
Where it has been recorded
How often EPA CPDat has listed Mibk in a product composition. These are source records, not Greenveil catalog products.
Source records
4,754
Named organisations
6
Furniture and furnishingsRaw materialsHome maintenanceCleaning and safetyConstructionUnknown or Indeterminate
Typical roles
SolventPerfumingDenaturantFragranceFlavouring