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InventoryRef 3532230/07/2020

METHYL PYRROLIDONE

N-methyl-2-pyrrolidone

METHYL PYRROLIDONE is linked to 1 EU annex record on this page. Inventory note: II/1393.

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Regulatory evidence by market

This matrix separates verified ingredient rules from sources that are mapped but not yet imported. No imported rule does not mean the ingredient is permitted.

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MarketEvidence statusRecordsSource language
European UnionEvidence linked
Prohibited entry found
Open this evidence		1English and EU languages
Great BritainEvidence linked
Prohibited
Open this evidence		1English
CanadaSource mapped
Official source mapped; ingredient rule not imported
0English and French
New ZealandEvidence linked
Prohibited
Open this evidence		1English
ASEANEvidence linked
Prohibited
Open this evidence		1English and national languages
ChinaSource mapped
Official source mapped; ingredient rule not imported
0Chinese with selected English material
JapanSource mapped
Official source mapped; ingredient rule not imported
0Japanese; official English translation available
South KoreaSource mapped
Official source mapped; ingredient rule not imported
0Korean with some English names
United StatesSource mapped
Official source mapped; ingredient rule not imported
0English
AustraliaSource mapped
Official source mapped; ingredient rule not imported
0English
BrazilSource mapped
Official source mapped; ingredient rule not imported
0Portuguese with INCI crosswalks
IndiaEvidence linked
Prohibited
Open this evidence		1English and Hindi
Saudi ArabiaEvidence linked
Prohibited
Open this evidence		1Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 872-50-4
CAS 872-50-4PubChem CID 13387

N-methyl-2-pyrrolidone

N-methylpyrrolidin-2-one is a member of the class of pyrrolidine-2-ones that is pyrrolidin-2-one in which the hydrogen attached to the nitrogen is replaced by a methyl group. It has a role as a polar aprotic solvent. It is a lactam, a N-alkylpyrrolidine and a member of pyrrolidin-2-ones. — ChEBI

IUPAC name
1-methylpyrrolidin-2-one
Molecular formula
C5H9NO
Molecular weight
99.13 g/mol
Exact mass
99.068413911 Da
XLogP3
-0.5
Topological polar surface area
20.3 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
0

Also known as

1-METHYL-2-PYRROLIDINONEN-MethylpyrrolidoneN-Methyl-2-pyrrolidinoneMethylpyrrolidone1-Methyl-2-pyrrolidone1-MethylpyrrolidoneMethyl pyrrolidoneN-Methylpyrrolidinone
16 more reported names
1-Methylpyrrolidinonen-methyl-pyrrolidone1-Methyl-5-pyrrolidinone2-Pyrrolidinone, 1-methyl-1-Methylazacyclopentan-2-oneN-Methyl-gamma-butyrolactamAgsolex 1N-Methyl-alpha-pyrrolidoneMicroposit 2001N-Methyl-alpha-pyrrolidinoneNSC-4594JR9CE63FPMCHEBI:7307NSC4594N 0131RefChem:57504
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 METHYL PYRROLIDONE

INCI name

METHYL PYRROLIDONE

Description

N-methyl-2-pyrrolidone

Record provenance

Inventory reference
35322
Imported identity
METHYL PYRROLIDONE
Source update
30/07/2020
European Commission CosIng source notes

Key data

CAS
872-50-4
EC
212-828-1
Restriction
II/1393
Function
SOLVENT
Dissolving other components of cosmetics. Solvents are usually liquids (aqueous and nonaqueous).

Official EU ingredient-name evidence

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

#16569 · METHYL PYRROLIDONE

Ingredients with overlapping formulation functions

METHYL OLEATE/PALMITATE/LINOLEATE/STEARATESKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT, SOLVENT, SURFACTANT - CLEANSING
METHYL PERFLUORO BUTYL/ISOBUTYL ETHERSOLVENT
METHYL PERFLUOROBUTYL ETHERSOLVENT, VISCOSITY CONTROLLING
METHYL PERFLUOROISOBUTYL ETHERSOLVENT, VISCOSITY CONTROLLING
METHYL SUNFLOWERSEEDATESKIN CONDITIONING - EMOLLIENT, SOLVENT
METHYL TRIMETHICONEHAIR CONDITIONING, SKIN CONDITIONING, SOLVENT
METHYLALSOLVENT
METHYLBUTENESSOLVENT

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 METHYL PYRROLIDONE appears in the CosIng inventory

The CosIng inventory lists METHYL PYRROLIDONE as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

METHYL PYRROLIDONE 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

METHYL PYRROLIDONE appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for METHYL PYRROLIDONE reads: "II/1393". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, METHYL PYRROLIDONE carries the following function designation(s):

CAS 872-50-4 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 METHYL PYRROLIDONE

This page combines the CosIng inventory entry for METHYL PYRROLIDONE with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research METHYL PYRROLIDONE 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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