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CAS 542-55-2 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 4033702/03/2011

ISOBUTYL FORMATE

2-Methylpropyl methanoate

ISOBUTYL FORMATE 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 542-55-2

CAS 542-55-2PubChem CID 10957

Isobutyl formate

Isobutyl formate appears as a colorless liquid. Less dense than water. Vapors heavier than air. Vapors may be narcotic and irritating in high concentrations. Used as a solvent and to make perfumes. — CAMEO Chemicals

IUPAC name: 2-methylpropyl formate

Molecular formula: C5H10O2
Molecular weight: 102.13 g/mol
Exact mass: 102.068079557 Da
XLogP3: 1.5
Topological polar surface area: 26.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

Formic acid, 2-methylpropyl esterTetryl formateIsobutyl formate (natural)FEMA No. 2197NSC 6968UNII-6OCL1KXH0Q6OCL1KXH0QEINECS 208-818-1

16 more reported names

UN2393BRN 1738888AI3-24240Isobutyl formate, 8CINSC-69682-Methylpropyl formate, 9CIISOBUTYL FORMATE [MI]ISOBUTYL FORMATE [FCC]ISOBUTYL FORMATE [FHFI]FEMA 21974-02-00-00029 (Beilstein Handbook Reference)UN 23932Methylpropyl formate2Methyl1propyl formateRefChem:1490832-Methylpropyl formic acid

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:173348
EPA DTXSID:DTXSID7060257
PubMed:21455817
PubMed:19071331
PubMed:18280687
PubMed:16843475
PubMed:14560915
PubMed:11434370

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 FORMATE

INCI name

ISOBUTYL FORMATE

Description

2-Methylpropyl methanoate

Record provenance

Inventory reference: 40337
Imported identity: ISOBUTYL FORMATE
Source update: 02/03/2011

European Commission CosIng source notes

Annex records for ISOBUTYL FORMATE

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Key data

CAS

542-55-2

208-818-1

Restriction

—

Function

PERFUMING: Used for perfume and aromatic raw materials.

Ingredients with overlapping formulation functions

ISOBUTYL ACETATEPERFUMING, SOLVENT

ISOBUTYL ANGELATEPERFUMING

ISOBUTYL BUTYRATEPERFUMING

ISOBUTYL CINNAMATEPERFUMING

ISOBUTYL FURYLPROPIONATEPERFUMING

ISOBUTYL HEPTYLATEPERFUMING

ISOBUTYL HEXANOATEPERFUMING

ISOBUTYL ISOBUTYRATEPERFUMING

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 FORMATE appears in the CosIng inventory

The CosIng inventory lists ISOBUTYL FORMATE 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 FORMATE 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 FORMATE 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 FORMATE carries the following function designation(s):

PERFUMING

CAS 542-55-2 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.

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Source note for ISOBUTYL FORMATE

This page reproduces the CosIng inventory entry for ISOBUTYL FORMATE 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 FORMATE 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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