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Dimethylhydantoin

Also known as 5,5-Dimethylhydantoin, 2,4-Imidazolidinedione, 5,5-dimethyl-, Dantoin DMH

CAS 77-71-4Formula C5H8N2O2Molar mass 128.13 g/molEC 201-051-3
31 suppliers listed
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Dimethylhydantoin chemical structure, C5H8N2O2, CAS 77-71-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
White, crystalline solid
Melting point
178 ยฐC
Boiling point
Sublimes
Solubility
Very soluble in ethanol, ether, acetone, benzene, chloroform, soluble in DMSO
HS code
293329
Category
Thickeners and film formers
Illustrative photo, colourless crystals in small glass vials on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Dimethylhydantoin?

Plain description, key identifiers and synonyms

5,5-Dimethylhydantoin is an imidazolidine-2,4-dione.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
5,5-dimethylimidazolidine-2,4-dione
CAS number
77-71-4 CAS number cross-checked
EC number
201-051-3
Molecular formula
C5H8N2O2
UNII
34032MQ9RO
MDL number
MFCD00005266
INCI name
DM HYDANTOIN
InChIKey
YIROYDNZEPTFOL-UHFFFAOYSA-N
InChI
InChI=1S/C5H8N2O2/c1-5(2)3(8)6-4(9)7-5/h1-2H3,(H2,6,7,8,9)
SMILES (canonical and isomeric)
CC1(C(=O)NC(=O)N1)C

Synonyms

  • 5,5-Dimethylhydantoin
  • 2,4-Imidazolidinedione, 5,5-dimethyl-
  • Dantoin DMH
  • 5,5-Dimethyl-2,4-imidazolidinedione
  • Dantoin 736
  • 5,5-Dimethyl hydantoin
  • Hydantoin, 5,5-dimethyl-
  • 5,5-dimethylimidazolidine-2,4-dione
  • DM Hydantoin
  • 4,4-dimethyl-2,5-dioxoimidazolidine
  • 5,5-Dimethyl-imidazolidin-2,4-dion
  • 5,5-dimethyl-imidazolidine-2,4-dione
  • 5,5-dimethyl-hydantoin
  • Dimethyl hydantoin
  • 5-24-05-00348 (Beilstein Handbook Reference)
  • 5,5-Dimethylhydantoin, 97%
  • 5,5-Dimethylimidazolidin-2,4-dione
  • 5,5-Dimethyl-imidazolidin-2,4-dione
  • 5,5-dimethylimidazolidine-2,4-dione,
  • 5,5-Dimethylhydantoin, LC-tDDA, CE30
  • 5-24-05-00348 (Beilstein Handbook
  • 5,5-dimethyl-1,3-diazolidine-2,4-dione

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
White, crystalline solidexp.
Melting point
178 ยฐCexp.
Boiling point
Sublimesexp.
Solubility
Very soluble in ethanol, ether, acetone, benzene, chloroform, soluble in DMSOexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
128.13 g/molcalc.
Exact mass
128.0586 Dacalc.
LogP (octanol/water)
-0.4calc.
Topological polar surface area
58.2 ร…ยฒcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
9calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.6calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1CNC(=O)N1

O=C1CNC(=O)N1

1 ring, 7 atoms, the Hydantoin ring system.

705 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Dimethylhydantoin suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 31 suppliers
30 of 30 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

31 suppliers in 10 countries

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Dimethylhydantoin price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Synthesis, preparation of water-soluble polymers.

Inert ingredient in pesticides, List 3.

Industrial uses: Ion exchange agent, Intermediate.

Consumer uses: Ion exchange agent.

Use classes: Cosmetics.

Cosmetic ingredient, INCI name DM HYDANTOIN(hair conditioning, viscosity controlling)

Functional uses

  • Softener and conditioner
  • Surfactant (surface active agent)
  • Viscosity modifier

Cosmetic functions

  • Hair conditioning
  • Viscosity controlling

How it is made

From acetone, urea, and ammonium carbonate, from acetone, potassium cyanate and hydrocyanic acid

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Dimethylhydantoin is traded under.

HS 2933.29Indicative HS code

Compounds containing an unfused imidazole ring (whether or not hydrogenated) in theโ€ฆ

World exports in 2024
$1.43B
โˆ’7.6% vs 2023, imports $1.47B
2019 to 2024
Top exporters
  1. China28.1%
  2. France * partner reported12.7%
  3. India * partner reported10.3%
Top importers
  1. United Kingdom13.0%
  2. United States7.9%
  3. China6.5%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Dimethylhydantoin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Dimethylhydantoin, based on the data on this page

What is Dimethylhydantoin?

5,5-Dimethylhydantoin is an imidazolidine-2,4-dione.

What is the CAS number of Dimethylhydantoin?

The CAS registry number of Dimethylhydantoin is 77-71-4.

What is the molecular formula and weight of Dimethylhydantoin?

The molecular formula of Dimethylhydantoin is C5H8N2O2 and its molar mass is 128.13 g/mol.

What is Dimethylhydantoin used for?

Synthesis, preparation of water-soluble polymers. Inert ingredient in pesticides, List 3. Industrial uses: Ion exchange agent, Intermediate. Consumer uses: Ion exchange agent. Use classes: Cosmetics.

Is Dimethylhydantoin hazardous?

No GHS hazard classification for Dimethylhydantoin is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Dimethylhydantoin?

Dimethylhydantoin is usually classified under HS code 293329 (Compounds containing an unfused imidazole ring (whether or not hydrogenated) in theโ€ฆ). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dimethylhydantoin?

CompoundList lists 31 suppliers of Dimethylhydantoin in China, United States, India, Canada and 6 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Dimethylhydantoin in India?

4 suppliers in India list Dimethylhydantoin on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Dimethylhydantoin?

Suppliers quote Dimethylhydantoin on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Dimethylhydantoin

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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