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5,5-Dimethylhydantoin

Product Name
5,5-Dimethylhydantoin
CAS No.
77-71-4
Chemical Name
5,5-Dimethylhydantoin
Synonyms
DMH;5,5-Dimethylimidazolidine-2,4-dione;DIMETHYLHYDANTOIN;T10;dantoindmh;5,5-DIMETHYL-2,4-IMIDAZOLIDINEDIONE;ADPRC1;t10[qr];nsc8652;dmh[qr]
CBNumber
CB5277245
Molecular Formula
C5H8N2O2
Formula Weight
128.13
MOL File
77-71-4.mol
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5,5-Dimethylhydantoin Property

Melting point:
174-177 °C (lit.)
Boiling point:
237.54°C (rough estimate)
Density 
1.2864 (rough estimate)
refractive index 
1.4730 (estimate)
Flash point:
193°C
storage temp. 
Sealed in dry,Room Temperature
solubility 
H2O: 0.1 g/mL hot, clear
pka
pKa 8.1 (Uncertain)
form 
Crystalline Powder or Crystals
color 
White to off-white
Water Solubility 
soluble
BRN 
2827
Cosmetics Ingredients Functions
HAIR CONDITIONING
VISCOSITY CONTROLLING
InChI
1S/C5H8N2O2/c1-5(2)3(8)6-4(9)7-5/h1-2H3,(H2,6,7,8,9)
InChIKey
YIROYDNZEPTFOL-UHFFFAOYSA-N
SMILES
CC1(C)NC(=O)NC1=O
LogP
-0.480
CAS DataBase Reference
77-71-4(CAS DataBase Reference)
NIST Chemistry Reference
2,4-Imidazolidinedione, 5,5-dimethyl-(77-71-4)
EPA Substance Registry System
5,5-Dimethylhydantoin (77-71-4)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
22-24/25-36/37-26
WGK Germany 
2
RTECS 
MU0977000
TSCA 
TSCA listed
HS Code 
29332100
Storage Class
11 - Combustible Solids
Hazardous Substances Data
77-71-4(Hazardous Substances Data)
Toxicity
LD50 oral in rabbit: 12660mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H317May cause an allergic skin reaction

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
D161403
Product name
5,5-Dimethylhydantoin
Purity
97%
Packaging
100g
Price
$29.4
Updated
2025/07/31
Sigma-Aldrich
Product number
D161403
Product name
5,5-Dimethylhydantoin
Purity
97%
Packaging
1kg
Price
$91.5
Updated
2025/07/31
TCI Chemical
Product number
D0739
Product name
5,5-Dimethylhydantoin
Purity
>98.0%(T)
Packaging
25g
Price
$16
Updated
2025/07/31
TCI Chemical
Product number
D0739
Product name
5,5-Dimethylhydantoin
Purity
>98.0%(T)
Packaging
500g
Price
$47
Updated
2025/07/31
TRC
Product number
D473300
Product name
5,5-Dimethylhydantoin
Packaging
100g
Price
$135
Updated
2021/12/16
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5,5-Dimethylhydantoin Chemical Properties,Usage,Production

Chemical Properties

white to off-white crystals or crystalline powder

Uses

5,5-Dimethylhydantoin is part of a group of hydantoin compounds that are being evaluated for their anticonvulsant and central nervous system antitumour properties.

Definition

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

Synthesis

a. Add 600-800 parts of ammonium bicarbonate and 500-700 parts of acetone cyanohydrin to water and stir to fully dissolve, and then seal it when heated to 10??;

b. Then pass 30 to 50 parts of ammonia into the substance made by step a, slowly increase the temperature to 50 to 65 ??, constant temperature for 1 to 2 hours, and stirring;

c. The substance made by step b was heated to 75??85??, induced air for 30??50 minutes, then cooled to room temperature and filtered, i.e., the crude dimethylhydantoin and the mother liquor were made;

d, the dimethylhydantoin crude product 950 to 1150 parts produced by step c is put into 150 to 300 parts of water and 700 to 900 parts of mother liquor mixture, stirring while putting, heating to 80 to 98 ?? and then adding 3 to 8 parts of activated carbon, decoloration for 20 to 40 minutes, filtration to remove the activated carbon, and then cooled to crystallize, centrifugal filtration and drying, i.e., the finished product of dimethylhydantoin is produced.

Purification Methods

Crystallise the hydantoin from EtOH and sublime it in vacuo. [Beilstein 24 III/IV 1097.]

5,5-Dimethylhydantoin Preparation Products And Raw materials

Raw materials

Acetone cyanohydrin Ammonium carbonate

Preparation Products

1,3-Dibromo-5,5-dimethylhydantoin
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5,5-Dimethylhydantoin Suppliers

Americas 1 Belgium 3 Canada 1 China 397 Czech Republic 1 Europe 5 Germany 13 India 26 Italy 1 Japan 7 Poland 1 Slovakia 1 South Korea 1 Switzerland 2 The Netherlands 1 Ukraine 1 United Kingdom 14 United States 40 Global 516
-Jilin Merlin Chemical Co., Ltd.
Tel
0432-63952539 13844213892
Email
13844213892@163.com
Country
China
ProdList
1
Advantage
58
Wuhan Huajiu Pharmaceutical Technology Co.,Ltd.
Tel
027-59225746 18062681621
Fax
027-59225746
Email
730880265@qq.com
Country
China
ProdList
4863
Advantage
58
J & K SCIENTIFIC LTD.
Tel
18210857532; 18210857532
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24529
Advantage
81
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44802
Advantage
61
Shanghai Hanhong Scientific Co.,Ltd.
Tel
021-54306202 13764082696
Email
info@hanhongsci.com
Country
China
ProdList
42934
Advantage
64
XiaoGan ShenYuan ChemPharm co,ltd
Tel
15527621225
Email
1791901229@qq.com
Country
China
ProdList
6908
Advantage
52
Beijing Isomersyn Technology CO;LTD
Tel
010-82954736 13391601435
Email
sales@isomersyn.com
Country
China
ProdList
3295
Advantage
57
Beckmann-Kenko GmbH
Tel
+49 4241 9308 88
Fax
+49 4241 9308 89
Email
info@beckmann-kenko.com
Country
Germany
ProdList
478
Advantage
62
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View Lastest Price from 5,5-Dimethylhydantoin manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD
Product
5,5-Dimethylhydantoin 77-71-4
Price
US $0.00/KG
Min. Order
25KG
Purity
98%min
Supply Ability
30tons/month
Release date
2023-02-02
Hebei Chuanghai Biotechnology Co., Ltd
Product
5,5-Dimethylhydantoin 77-71-4
Price
US $1.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
10 mt
Release date
2024-11-22
HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
Product
5,5-Dimethylhydantoin 77-71-4
Price
US $1000.00-700.00/ton
Min. Order
1ton
Purity
99%
Supply Ability
5000
Release date
2024-08-14

77-71-4, 5,5-DimethylhydantoinRelated Search:

Iprodione Dimethyl carbonate Dimethyl fumarate Dimethyl ether Dimethyl phthalate Dimethyl sebacate ETHANE N,N-Dimethylformamide Dimethyl sulfoxide Bromo-1-chloro-5,5-dimethylhydantoin, 3-: (Bromo-1-chloro-5.5-dimethyl-2,4-imidazokidinedione),3-BROMO-1-CHLORO-5,5-DIMETHYLHYDANTOIN (S)-MEPHENYTOIN 1,3-DIAZASPIRO[4.5]DECANE-2,4-DIONE 5-(4-METHYLPHENYL)-5-PHENYLHYDANTOIN 1-(HYDROXYMETHYL)-5,5-DIMETHYLHYDANTOIN,1-METHYLOL-5,5-DIMETHYLHYDANTOIN,1,1-METHYLOL-5,5-DIMETHYLHYDANTOIN 1-BROMO-3-CHLORO-5,5-DIMETHYLHYDANTOIN 96+%,1-Bromo-3-chloro-5,5-dimethylhydantoin 1,3-DICHLORO-5,5-DIMETHYLHYDANTOIN 5,5-Diphenylhydantoin 5-METHYL-5-PHENYLHYDANTOIN

  • dantoindmh
  • DM Hydantoin
  • dmh[qr]
  • dmhydantoin
  • Hydantoin, 5,5-dimethyl-
  • nsc8652
  • T10
  • t10[qr]
  • A-UREIDOISOBUTYRIC ACID LACTAM
  • DMH
  • DIMETHYLHYDANTOIN
  • 5,5-DIMETHYL-2,4-DIOXOTETRAHYDROIMIDAZOLE
  • 5,5-DIMETHYL-2,4-IMIDAZOLIDINEDIONE
  • 5,5'-DIMETHYLHYDANTOIN
  • 5,5-DIMETHYLHYDANTOIN
  • 5,5-Dimethylimidazolidine-2,4-dione
  • 5,5-Dimethylhydrantoin
  • 2,4-Imidazolidinedione,5,5-dimethyl-
  • 4-Imidazolidinedione,5,5-dimethyl-2
  • 5,5-dimethyl-4-imidazolidinedione
  • 5,5-dimethyl-hydantoi
  • 5,5-Dimethyl-imidazolidin-2,4-dion
  • 5,5-Dimethylimidazolidin-2,4-dione
  • 1-uriodo-2-propanone
  • 5,5-DIMETHYLHYDANTOIN (DMH)
  • 5,5-dimethylhydatoin
  • Acetonylurea
  • Dantoin DMH
  • CHLORETHERKETONE
  • 5,5-Dimethylhydantoin,97%
  • 5,5-DIMETHYL HYDANTOIN-AMINO ACID USAGE GRADE
  • 5,5-DIMETHYL HYDANTOIN-WATER TREATMENT GRADE
  • 2,4-Dioxo-5,5-dimethylimidazolidine
  • gamma-Dimethylhydantoin
  • 5,5-DiMethylhydantoin, 97% 1KG
  • 5,5-DiMethylhydantoin, 97% 250GR
  • 4,4-Dimethyl-2,5-dioxoimidazolidine
  • Fennosurf 300
  • 5,5-Dimethylhydantoin &gt
  • 5,5-Dimethylhydantoin USP/EP/BP
  • Hydantoin Impurity 13
  • Roxadustat Impurity 41
  • ADP-ribosyl cyclase 1
  • cyclic ADP-ribose hydrolase
  • 5,5-Dimethyl,1-nitro imidazolidine-2,4-dione
  • 5,5-Dimethylhydantoin,>98%
  • 5, 5-dimethylheine
  • PE/Elab Fluor? 594 Anti-Human CD38 Antibody[AT13/5
  • Elab Fluor? Red 780 Anti-Human CD38 Antibody[HIT2
  • 2'-phospho-ADP-ribosyl cyclase
  • 2'-phospho-cyclic-ADP-ribose transferase
  • ADPRC 1
  • ADPRC1
  • ADP-ribosyl
  • ADP-ribosyl cyclase 1 (ADPRC 1)
  • cyclase
  • cyclic ADP-ribose hydrolase 1
  • Cyclic ADP-ribose hydrolase 1 (cADPr hydrolase 1)