Skip to main content
CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
InventoryRef 4121902/03/2011

TRIMETHYLHEXANAL

3,5,5-Trimethylhexanal

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

INCI CheckerCompare all markets Search similar

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.

Markets and their official sourcesSearch every market for this name

Chemical identity and properties

PubChem 2D chemical structure for CAS 5435-64-3
CAS 5435-64-3PubChem CID 21574

3,5,5-Trimethylhexanal

3,5,5-Trimethylhexanal is a saturated fatty aldehyde. — ChEBI

IUPAC name
3,5,5-trimethylhexanal
Molecular formula
C9H18O
Molecular weight
142.24 g/mol
Exact mass
142.135765193 Da
XLogP3
2.7
Topological polar surface area
17.1 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
0

Also known as

Isononylaldehydetert-ButylisopentanalHEXANAL, 3,5,5-TRIMETHYL-3,5,5-TrimethylcapronaldehydeFEMA No. 3524green hexanalHexanal, 3,5,5-trimethl-3,5,5-Trimethyl hexanal
16 more reported names
U62H30BXPJEINECS 226-603-0NSC 21482BRN 1740882HSDB 7626AI3-22274EC 226-603-0NSC-214824-01-00-03362 (Beilstein Handbook Reference)3,5,5-TRIMETHYLHEXANAL [FHFI]3,5,5-TRIMETHYLHEXANAL [HSDB]3,5,5-TRIMETHYL HEXANAL [FCC]RefChem:486455(+-)-3,5,5-TRIMETHYLHEXANAL3,5,5-TRIMETHYLHEXANAL, (+-)-226-603-0
Open full PubChem recordPubChem annotations3D structure image
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 TRIMETHYLHEXANAL

INCI name

TRIMETHYLHEXANAL

Description

3,5,5-Trimethylhexanal

Record provenance

Inventory reference
41219
Imported identity
TRIMETHYLHEXANAL
Source update
02/03/2011
European Commission CosIng source notes
Browse

Browse EU annexes

Explore Annex II–VI to see which substances are prohibited, restricted or permitted under specific conditions.

Search

Search annex entries

Search the annex database for entries matching TRIMETHYLHEXANAL or related substances.

Key data

CAS
5435-64-3
EC
226-603-0
Restriction
—
Function
PERFUMING
Used for perfume and aromatic raw materials.

Ingredients with overlapping formulation functions

TRIMETHYLCYCLOHEXENE-1-METHANOLPERFUMING
TRIMETHYLCYCLOHEXYLACETYL-CYCLOPENTANONEPERFUMING
TRIMETHYLCYCLOPENTENYL DIMETHYLISOPENTENOLPERFUMING
TRIMETHYLDODECATRIEN-3-YL ACETATEPERFUMING
TRIMETHYLHEXYL ACETATEPERFUMING
TRIMETHYLHEXYL FORMATEPERFUMING
TRIMETHYLHEXYL PROPIONATEPERFUMING
TRIMETHYLNORBORNAN-2-ONEPERFUMING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicalsPubChem PUG RESTEU Safety Gate cosmetic product alertsECHA CHEMUS EPA CompToxCosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortal

How TRIMETHYLHEXANAL appears in the CosIng inventory

The CosIng inventory lists TRIMETHYLHEXANAL 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.

TRIMETHYLHEXANAL is also tagged with 1 cosmetic function 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

TRIMETHYLHEXANAL 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, TRIMETHYLHEXANAL carries the following function designation(s):

CAS 5435-64-3 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.
View CAS records

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

Source note for TRIMETHYLHEXANAL

This page reproduces the CosIng inventory entry for TRIMETHYLHEXANAL 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 TRIMETHYLHEXANAL and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

View sourcesView updates

Tools & next steps

Check your formula

Scan a full INCI list to detect TRIMETHYLHEXANAL and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to TRIMETHYLHEXANAL, its identifiers or nearby name variants.

Search