Ingredient Dictionary

DIMETHYL IMIDAZOLIDINONE

1,3-Dimethyl-2-imidazolidinon is an imidazolidinone.

Definition

1,3-Dimethyl-2-imidazolidinon is an imidazolidinone.

Source: PubChem

US FDA substance register · UNII 5C1YQQ9M90 · registered name DIMETHYL IMIDAZOLIDINONE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Keeps skin in good condition (CosIng catch-all)SKIN CONDITIONINGDraws in and holds moistureHUMECTANTSoftens hairHAIR CONDITIONING

Safety & regulatory references

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

More data — names, identifiers, properties, test records, literature

Names & identifiers

DIMETHYL IMIDAZOLIDINONEINCI다이메틸이미다졸리디논Korean label name (MFDS standard)2-Imidazolidinone, 1,3-dimethyl-Synonym

CAS No.chemical registry number: 80-73-9
EC No.EU chemical inventory number: 201-304-8
DTXSIDUS EPA chemical ID: DTXSID1073153
DTXCIDUS EPA compound ID: DTXCID2048169

IUPAC: 1,3-Dimethylimidazolidin-2-one
Molecular formula: C5H10N2O
Molecular weight: 114.148 g/mol

Measured properties

Appearance: liquid
Colour: colourless
Melting/freezing point: 8.2 ℃
Initial boiling point and range: 221 ℃
Flash point: 120 ℃
Flammability (solid, gas): flammable
Upper/lower flammability or explosive limits: 8.4 / 1.3 %
Vapour pressure: 20.6 ㎩ (@ 25 ℃)
Vapour density: 3.94
Relative density: 1.06
n-Octanol/water partition coefficient (Kow): -0.31 (est.)
Auto-ignition temperature: 300 ℃
Viscosity: 1.95 cSt (@ 20 ℃)
Molecular weight: 114.14

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: KOSHA safety data sheets (Korea)

What products actually use it for

What the 6 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

Intermediate2
Softener and conditioner2
Processing aids not otherwise specified1
Humectant1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

3 skin studies and 2 eye studies are on record.

Classed as moderate1Classed as low1

The studies disagree (the most common conclusion covers 50%), so they do not establish that this ingredient is irritating. These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 5 studies

Moderate or Mild Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to
Not likely to be sensitizing
skin sensitisation: in vivo (LLNA) · Screening · according to OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
SkinIrr2
Skin Irritation · QSAR Predicted
Corrosive or Irritation Persists for > 21 days
eye irritation: in vivo · Screening · other guideline: Japanese Ministry of Agriculture, Forestry and Fisheries, Test Data for Registration of Agricultural Chemicals, Eye Irritation (2-1-5), 12 Nohsan No. 8147, Agricultural Production Bureau, November 24, 2000 according to OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion) according to EPA OPPTS 870.2400 (Acute Eye Irritation) according to
Category 6.4A (Category 2A)
Eye Irritation · Read Across