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InventoryRef 5419815/10/2010

2-METHYLPROPANAL

Dimethylacetaldehyde; Isobutyraldehyde

2-METHYLPROPANAL is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

Chemical identity and properties

PubChem 2D chemical structure for CAS 78-84-2
CAS 78-84-2PubChem CID 6561

Isobutyraldehyde

Isobutyraldehyde is a member of the class of propanals that is propanal substituted by a methyl group at position 2. It has a role as a Saccharomyces cerevisiae metabolite. It is a member of propanals and a 2-methyl-branched fatty aldehyde. ChEBI

IUPAC name
2-methylpropanal
Molecular formula
C4H8O
Molecular weight
72.11 g/mol
Exact mass
72.057514874 Da
XLogP3
0.8
Topological polar surface area
17.1 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
0

Also known as

IsobutanalIsobutylaldehyde2-MethylpropionaldehydePropanal, 2-methyl-Isobutyric aldehydeMethylpropanalValine aldehyde2-Methyl-1-propanal
16 more reported names
IsopropylaldehydeIsopropylformaldehydeIsobutaldehydeIsobutyraldehydIsobutyralMethyl propanalIsobutyryl aldehydeIsopropyl aldehydealpha-MethylpropionaldehydeIsopropyl formaldehydeisobutyl aldehydePropionaldehyde, 2-methyl-ISO-BUTYRALDEHYDEFEMA No. 2220NCI-C60968NSC-6739
External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for 2-METHYLPROPANAL

INCI name

2-METHYLPROPANAL

Description

Dimethylacetaldehyde; Isobutyraldehyde

Record provenance

Inventory reference
54198
Imported identity
2-METHYLPROPANAL
Source update
15/10/2010
European Commission CosIng source notes

Key data

Restriction
Function
NAIL CONDITIONING
Improving and/or enhancing the cosmetic characteristics of the nail (moisturizing, increasing sheen, reducing brittleness and flaking, etc.).
PERFUMING
Used for perfume and aromatic raw materials.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

Ingredients with overlapping formulation functions

Additional official and scientific sources

11 external databases to check this identity in

How 2-METHYLPROPANAL appears in the CosIng inventory

The CosIng inventory lists 2-METHYLPROPANAL as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

2-METHYLPROPANAL is also tagged with 2 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

2-METHYLPROPANAL is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, 2-METHYLPROPANAL carries the following function designation(s):

CAS 78-84-2 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.

Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.

Source note for 2-METHYLPROPANAL

This page reproduces the CosIng inventory entry for 2-METHYLPROPANAL from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research 2-METHYLPROPANAL and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

Tools & next steps

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