| Identification | More | [Name]
5,5-Dimethylhydantoin | [CAS]
77-71-4 | [Synonyms]
5,5-DIMETHYL-2,4-DIOXOTETRAHYDROIMIDAZOLE
5,5-DIMETHYL-2,4-IMIDAZOLIDINEDIONE
5,5'-DIMETHYLHYDANTOIN
5,5-DIMETHYLHYDANTOIN
5,5-Dimethylimidazolidine-2,4-dione
A-UREIDOISOBUTYRIC ACID LACTAM
DIMETHYLHYDANTOIN
DMH
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
Acetonylurea
Dantoin DMH
dantoindmh
DM Hydantoin
dmh[qr]
dmhydantoin | [EINECS(EC#)]
201-051-3 | [Molecular Formula]
C5H8N2O2 | [MDL Number]
MFCD00005266 | [Molecular Weight]
128.13 | [MOL File]
77-71-4.mol |
| Chemical Properties | Back Directory | [Appearance]
white to off-white crystals or crystalline powder | [Melting point ]
174-177 °C (lit.) | [Boiling point ]
237.54°C (rough estimate) | [density ]
1.2864 (rough estimate) | [refractive index ]
1.4730 (estimate) | [Fp ]
193°C | [storage temp. ]
Sealed in dry,Room Temperature | [solubility ]
H2O: 0.1 g/mL hot, clear
| [form ]
Crystalline Powder or Crystals | [pka]
pKa 8.1 (Uncertain) | [color ]
White to off-white | [Water Solubility ]
soluble | [BRN ]
2827 | [Henry's Law Constant]
3.5×103 mol/(m3Pa) at 25℃, HSDB (2015) | [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]
77-71-4(EPA Substance) |
| Safety Data | Back Directory | [Symbol(GHS) ]
GHS07 | [Signal word ]
Warning | [Hazard statements ]
H302-H317 | [Precautionary statements ]
P280 | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes .
S36/37:Wear suitable protective clothing and gloves .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [WGK Germany ]
2
| [RTECS ]
MU0977000
| [TSCA ]
Yes | [REACH Registrations]
Active | [HS Code ]
29332100 | [Storage Class]
11 - Combustible Solids | [Hazardous Substances Data]
77-71-4(Hazardous Substances Data) | [Toxicity]
LD50 oral in rabbit: 12660mg/kg |
| Hazard Information | Back Directory | [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 inc | [Purification Methods]
Crystallise the hydantoin from EtOH and sublime it in vacuo. [Beilstein 24 III/IV 1097.] |
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