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CAS 97-85-8 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

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InventoryRef 4034102/03/2011

ISOBUTYL ISOBUTYRATE

2-Methylpropyl 2-Methylpropanoate

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

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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.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 97-85-8

CAS 97-85-8PubChem CID 7351

Isobutyl isobutyrate

Isobutyl isobutyrate appears as a colorless liquid with a pleasant fruity odor. Moderately toxic by inhalation. Insoluble in water and floats on water, but soluble in alcohol and ethers. It is used as a flavoring and in the manufacture of insecticides. — CAMEO Chemicals

IUPAC name: 2-methylpropyl 2-methylpropanoate

Molecular formula: C8H16O2
Molecular weight: 144.21 g/mol
Exact mass: 144.115029749 Da
XLogP3: 2.5
Topological polar surface area: 26.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

Isobutyl isobutanoateIsobutyl 2-methylpropanoate2-Methylpropyl 2-methylpropionate2-METHYLPROPYL ISOBUTYRATEIsobutyric acid, isobutyl esterPropanoic acid, 2-methyl-, 2-methylpropyl esterIsobutylester kyseliny isomaselneFEMA No. 2189

16 more reported names

FEMA Number 2189Y495J99R5DNSC-65382-METHYLPROPIONIC ACID ISOBUTYL ESTERRefChem:149087202-612-5IsobutylisobutyrateNSC 65382-Methyl-1-propyl 2-methylpropanoateIsobutyl ester of 2-methylpropanoic acidWE(3:0(2Me)/3:0(2Me))Isobutyl isobutyrate (natural)HSDB 5311EINECS 202-612-5UN2528BRN 1701355

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External database identifiers

ChEBI:CHEBI:179934
ChEMBL:CHEMBL3188433
EPA DTXSID:DTXSID6026612

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 ISOBUTYL ISOBUTYRATE

INCI name

ISOBUTYL ISOBUTYRATE

Description

2-Methylpropyl 2-Methylpropanoate

Record provenance

Inventory reference: 40341
Imported identity: ISOBUTYL ISOBUTYRATE
Source update: 02/03/2011

European Commission CosIng source notes

Annex records for ISOBUTYL ISOBUTYRATE

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Key data

CAS

97-85-8

202-612-5

Restriction

—

Function

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.

#13675 · ISOBUTYL ISOBUTYRATE

Ingredients with overlapping formulation functions

ISOBUTYL FORMATEPERFUMING

ISOBUTYL FURYLPROPIONATEPERFUMING

ISOBUTYL HEPTYLATEPERFUMING

ISOBUTYL HEXANOATEPERFUMING

ISOBUTYL ISOVALERATEPERFUMING

ISOBUTYL LINALOOLPERFUMING

ISOBUTYL METHYLAMINOBENZOATEPERFUMING

ISOBUTYL METHYLBUTYRATEPERFUMING

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 chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How ISOBUTYL ISOBUTYRATE appears in the CosIng inventory

The CosIng inventory lists ISOBUTYL ISOBUTYRATE 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.

ISOBUTYL ISOBUTYRATE 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

ISOBUTYL ISOBUTYRATE 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, ISOBUTYL ISOBUTYRATE carries the following function designation(s):

PERFUMING

CAS 97-85-8 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.

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Source note for ISOBUTYL ISOBUTYRATE

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

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