Ingredient Dictionary

IMIDAZOLIDINONE

Imidazolidin-2-one is a member of ureas and an imidazolidinone.

Definition

Imidazolidin-2-one is a member of ureas and an imidazolidinone.

Source: PubChem

US FDA substance register · UNII 2K48456N55 · registered name IMIDAZOLIDINONE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Gives the product a scentPERFUMINGListed as a fragrance-composition material (not a claim that it adds scent)FRAGRANCE

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

IMIDAZOLIDINONEINCI이미다졸리디논Korean label name (MFDS standard)2-ImidazolidinoneSynonym

CAS No.chemical registry number: 120-93-4
EC No.EU chemical inventory number: 204-436-4
DTXSIDUS EPA chemical ID: DTXSID0020602
DTXCIDUS EPA compound ID: DTXCID20602

IUPAC: Imidazolidin-2-one
Molecular formula: C3H6N2O
Molecular weight: 86.094 g/mol

Measured properties

Appearance: CBI, Liquid · White odorless solid, [Hawley] Light yellow crystals, [Aldrich MSDS]
Melting point: 131 °C
Solubility: VERY SOL IN WATER & IN HOT ALC, DIFFICULTLY SOL IN ETHER · SLIGHTLY SOL IN CHLOROFORM
pH: 9~11 (100 g/ℓ, 20℃)
Melting/freezing point: 68~95 ℃
Initial boiling point and range: 335.5 ℃(1013.25 hPa)
Flash point: 265 ℃
Vapour pressure: 0 hPa (20℃)
Water solubility: 596 g/ℓ (20℃, pH: 10)
Vapour density: 1.44 g/㎤ (20℃)
Relative density: 1.44
n-Octanol/water partition coefficient (Kow): -1.16 (log Pow, 25℃)
Molecular weight: 86.1

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: PubChem · KOSHA safety data sheets (Korea)

What products actually use it for

What the 17 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.

Film former5
Fragrance4
Degradant/impurity (EPA)3
Wrinkle resisting agent2
Solvent1
Deodorizer1
Intermediate1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

2 skin studies and 2 eye studies are on record.

Classed as low2

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 4 studies

Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) equivalent or similar to
Not likely to be sensitizing
skin sensitisation: in vivo (LLNA) · Screening · according to OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay) according to EU Method B.42 (Skin Sensitisation: Local Lymph Node Assay)
Severe Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) equivalent or similar to
Category 6.4A (Category 2A)
Eye Irritation · Read Across