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CAS 2998-18-7 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 5841315/10/2010

SEC-BUTYL METHACRYLATE

2-Propenoic Acid, 2-Methyl-, 1- Methylpropyl Ester

SEC-BUTYL METHACRYLATE 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 2998-18-7

CAS 2998-18-7PubChem CID 97732

sec-Butyl methacrylate

IUPAC name: butan-2-yl 2-methylprop-2-enoate

Molecular formula: C8H14O2
Molecular weight: 142.20 g/mol
Exact mass: 142.099379685 Da
XLogP3: 2.8
Topological polar surface area: 26.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

Methacrylic acid, sec-butyl esterIsobutyl methacyrlateUNII-37AD4SRT9M37AD4SRT9MEINECS 221-073-7NSC-326302-Propenoic acid, 2-methyl-, 1-methylpropyl esterNSC 32630

16 more reported names

1-METHYLPROPYL 2-METHYLPROPENOATERefChem:182122SEC-BUTYL METHACRYLATE [INCI]221-073-7VXTQKJXIZHSXBY-UHFFFAOYSA-N2-Propenoic acid, 2-methyl-, 1-methylpropyl ester, homopolymersec-butyl 2-methylprop-2-enoatesec-butylmethacrylatb-butyl methacrylateb-n-butyl methacrylateSec-butyl 2-methylacrylate #sec-Butyl methacrylate, AldrichCPRDB-266730B5371sec-Butyl Methacrylate (stabilized with MEHQ)sec-Butyl methacrylate Solution in Methanol, 1000ug/mL

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External database identifiers

EPA DTXSID:DTXSID20863073

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 SEC-BUTYL METHACRYLATE

INCI name

SEC-BUTYL METHACRYLATE

Description

2-Propenoic Acid, 2-Methyl-, 1- Methylpropyl Ester

Record provenance

Inventory reference: 58413
Imported identity: SEC-BUTYL METHACRYLATE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for SEC-BUTYL METHACRYLATE

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Key data

CAS

2998-18-7

221-073-7

Restriction

—

Function

FILM FORMING: Producing (upon application) a continuous film on the skin, hair or nails.

Official EU ingredient-name evidence

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

#25561 · SEC-BUTYL METHACRYLATE

Ingredients with overlapping formulation functions

ROSIN HYDROLYZED COLLAGENFILM FORMING, HAIR CONDITIONING, HAIR FIXING, SKIN CONDITIONING

RUBBER LATEXFILM FORMING, OPACIFYING

RUBBER LATEX CROSSPOLYMERFILM FORMING

SAFFLOWER SEED OIL GLYCERETH-8 ESTERSCLEANSING, FILM FORMING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

SERUM ALBUMINFILM FORMING, HAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING

SH-POLYPEPTIDE-121FILM FORMING, SKIN CONDITIONING

SHELLACBINDING, FILM FORMING, HAIR FIXING, SKIN CONDITIONING - EMOLLIENT, VISCOSITY CONTROLLING

SHELLAC CERABINDING, FILM FORMING, HAIR CONDITIONING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

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 SEC-BUTYL METHACRYLATE appears in the CosIng inventory

The CosIng inventory lists SEC-BUTYL METHACRYLATE 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.

SEC-BUTYL METHACRYLATE 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

SEC-BUTYL METHACRYLATE 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, SEC-BUTYL METHACRYLATE carries the following function designation(s):

FILM FORMING

CAS 2998-18-7 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 SEC-BUTYL METHACRYLATE

This page reproduces the CosIng inventory entry for SEC-BUTYL METHACRYLATE 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 SEC-BUTYL METHACRYLATE 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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