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Imidurea

CAS 82852-50-4 · 20/100 · High conf.

Also registered as 2 other CAS numbers

1698942-49-2 · 39236-46-9

Imidurea chemical structure

Concern score

20/100Minor concern based on regulatory listings.
High confidence

Imidurea in plain language

What it is

On cosmetic ingredient lists it appears as “Imidazolidinyl urea”.

Also known as Imidazolidinyl urea · N,N'-Methylenebis · Euxyl K 200 · Germal II · Germall 115 · Imidazolinidyl urea

Show all 8 names

NCGC00164388-01 · imidazolidinylurea

What it does

Used in cosmetics as a preservative. Imidazolidinyl Urea is the heterocyclic substituted urea.

  • Preservative
Is it a concern?
Minor concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

What the listings say

Permitted, with conditions — Imidurea appears on published "allowed" regulatory lists rather than on a restriction list.

N,N''-Methylenebis[N'-[3-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl]urea] is listed in Annex V of the EU Cosmetics Regulation (EC) 1223/2009 (preservatives allowed in cosmetic products).

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. Imidurea appears in these published regulatory listings.

  • EU Annex V — permitted preservative
  • EU permitted preservative
  • Inactive ingredient in US drugs
  • In marketed US drugs

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • Pharma
  • Food
  • Industrial
  • USFDAinactive ingredient database3 entries
    • Route: TOPICAL; Dosage form: CREAM; Potency: 0.4 %w/wSource →
    • Route: TOPICAL; Dosage form: LOTION; Maximum daily exposure: 228 mgSource →
    • Route: TOPICAL; Dosage form: SHAMPOO; Maximum daily exposure: 60 mgSource →
  • EUCosIngActive2 entries
    • Imidazolidinyl Urea is the heterocyclic substituted urea that conforms to the formula: Restriction: V/27Source →
    • Cosmetics Regulation annex V / ref 27.Source →
  • EUECallowed_listedAnnex V of EU Cosmetics Regulation (EC) 1223/2009: preservatives allowed in cosmetic products. Maximum concentration: 0.6%
    • Annex V of EU Cosmetics Regulation (EC) 1223/2009: preservatives allowed in cosmetic products. Maximum concentration: 0.6%Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 846 composition records across product categories including Personal care, Electronics/small appliances, Medical/dental. EPA CPDat classifies this chemical for functional uses including Preservative, Processing aids not otherwise specified.
    • EPA CPDat observed this chemical in 846 composition records across product categories including Personal care, Electronics/small appliances, Medical/dental. EPA CPDat classifies this chemical for functional uses including Preservative, Processing aids not otherwise specified.Source →
  • USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 5 drug products and 5 package presentations.
    • FDA NDC lists this ingredient in 5 drug products and 5 package presentations.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Imidurea. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

Evidence & sources

No graded research studies for Imidurea yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

9 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EU CosIng Cosmetics Regulation Annexes

    regulatory · updated 2021-08-02

    Open →

  • EPA Chemical and Products Database

    exposure · updated september 17, 2016

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA Inactive Ingredient Database

    regulatory · updated 2026-01-09

    Open →

  • FDA National Drug Code Directory

    regulatory · updated 2028-02-03

    Open →

  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →

  • openFDA Substance

    registry · updated 2026-05-24

    Open →

  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    Open →
Reference links (1)
Openfda substance

ntp.niehs.nih.gov

Read →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed Imidurea in a product composition. These are source records, not Greenveil catalog products.

Source records

846

Named organisations

6

Personal careElectronics/small appliancesMedical/dentalFood and drug

Typical roles

Preservative
See products using Imidurea →

Catalog

Found in these products

Their ingredient lists include Imidurea; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 90 →Find products without it →