5,5-Dimethylimidazolidine-2,4-dione

Modify Date: 2026-06-30 19:36:40

5,5-Dimethylimidazolidine-2,4-dione Structure
5,5-Dimethylimidazolidine-2,4-dione structure
 Common Name 5,5-Dimethylimidazolidine-2,4-dione
CAS Number 77-71-4 Molecular Weight 128.129
Density 1.1±0.1 g/cm3 Boiling Point N/A
Molecular Formula C5H8N2O2 Melting Point 175-180ºC
MSDS N/A Flash Point 193ºC

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 5,5-Dimethylhydantoin
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.1±0.1 g/cm3
Melting Point 175-180ºC
Molecular Formula C5H8N2O2
Molecular Weight 128.129
Flash Point 193ºC
Exact Mass 128.058578
PSA 58.20000
LogP -0.66
Index of Refraction 1.449
InChIKey YIROYDNZEPTFOL-UHFFFAOYSA-N
SMILES CC1(C)NC(=O)NC1=O
Water Solubility H2O: 0.1 g/mL hot, clear | soluble

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
MU0977000
CHEMICAL NAME :
Hydantoin, 5,5-dimethyl-
CAS REGISTRY NUMBER :
77-71-4
BEILSTEIN REFERENCE NO. :
0002827
LAST UPDATED :
199701
DATA ITEMS CITED :
10
MOLECULAR FORMULA :
C5-H8-N2-O2
MOLECULAR WEIGHT :
128.15
WISWESSER LINE NOTATION :
T5MVMV EHJ E1 E1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
7800 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Behavioral - withdrawal Lungs, Thorax, or Respiration - dyspnea
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 47(6),76,1982
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
2800 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag, Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951- Volume(issue)/page/year: 4,723,1954
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Unreported
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
10 gm/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea Gastrointestinal - changes in structure or function of salivary glands
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 46(5),69,1981
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
12660 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Behavioral - rigidity (including catalepsy) Lungs, Thorax, or Respiration - dyspnea
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 47(6),76,1982
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
8430 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Behavioral - withdrawal Lungs, Thorax, or Respiration - dyspnea
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 47(6),76,1982
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Unreported
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
5600 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea Gastrointestinal - changes in structure or function of salivary glands
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 46(5),69,1981
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Unreported
SPECIES OBSERVED :
Mammal - species unspecified
DOSE/DURATION :
15950 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea Gastrointestinal - changes in structure or function of salivary glands
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 46(5),69,1981 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
2464 mg/kg/22W-I
TOXIC EFFECTS :
Liver - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - catalases
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 46(5),69,1981 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M1156 No. of Facilities: 230 (estimated) No. of Industries: 3 No. of Occupations: 8 No. of Employees: 1125 (estimated)

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Hazard Codes Xi
Risk Phrases R36/37/38
Safety Phrases S24/25
WGK Germany 2
RTECS MU0977000
HS Code 2933990090

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 5,5-Dimethylimidazolidine-2,4-dioneBioassay

View more

This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: Cytochrome P450 Family 1 Subfamily A Member 2 (CYP1A2) small molecule antagonists: lu...
Source: 824
External Id: CYP273
Name: qHTS assay to identify small molecule antagonists of the peroxisome proliferator-acti...
Source: 824
Target: N/A
External Id: PPARGV841
Name: qHTS assay to identify small molecule agonists of the TGF-beta/Smad signaling pathway...
Source: 824
Target: N/A
External Id: TGF788
Name: qHTS assay to identify small molecule antagonists of the TGF-beta/Smad signaling path...
Source: 824
Target: N/A
External Id: TGF602
Name: qHTS assay to test for compound auto fluorescence at 535 nm (green) in HEK293 cell fr...
Source: 824
Target: N/A
External Id: SPEC167MG
Name: p53 small molecule agonists, cell-based qHTS assay: qHTS cell viability counter scree...
Source: 824
Target: N/A
External Id: P53600
Name: qHTS assay to identify small molecule agonists of the peroxisome proliferator-activat...
Source: 824
Target: N/A
External Id: PPARDV813
Name: qHTS assay to test for compound auto fluorescence at 590 nm (red) in HEK293 cell free...
Source: 824
Target: N/A
External Id: SPEC167MR
Name: p53 small molecule agonists, cell-based qHTS assay with rat liver microsomes: qHTS ce...
Source: 824
Target: N/A
External Id: P53MS958
Name: qHTS assay to test for compound auto fluorescence at 535 nm (green) in HEK293 cells
Source: 824
Target: N/A
External Id: SPEC167CG
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 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

MFCD00005266
5,5-Dimethylhydantoin
EINECS 201-051-3
5,5-Dimethyl hydantoin
5,5-dimethylimidazolidine-2,4-dione
5,5-Dimethyl-2,4-imidazolidinedione

 5,5-Dimethylimidazolidine-2,4-dione | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the SMILES notation of 5,5-Dimethylhydantoin?
A: SMILES notation of 5,5-Dimethylhydantoin is CC1(C)NC(=O)NC1=O.
Q: What is the molecular weight of 5,5-Dimethylhydantoin?
A: Molecular weight of 5,5-Dimethylhydantoin is 128.129.
Q: What are the upstream materials of 5,5-Dimethylhydantoin?
A: Related upstream materials(CAS) of 5,5-Dimethylhydantoin: 3673-15-2;4933-77-1;143-33-9;67-64-1;77-48-5;79488-38-3;35339-68-5;79488-29-2;60934-50-1.
Q: What is the LogP of 5,5-Dimethylhydantoin?
A: LogP of 5,5-Dimethylhydantoin is -0.66.
Q: What are the downstream products of 5,5-Dimethylhydantoin?
A: Related downstream products(CAS) of 5,5-Dimethylhydantoin: 141312-47-2;4114-28-7;25176-29-8;3040-92-4;6851-81-6;77-48-5;62-57-7;7664-41-7.
Q: What English synonyms does 5,5-Dimethylhydantoin have?
A: English synonyms of 5,5-Dimethylhydantoin: MFCD00005266, 5,5-Dimethylhydantoin, EINECS 201-051-3, 5,5-Dimethyl hydantoin, 5,5-dimethylimidazolidine-2,4-dione, 5,5-Dimethyl-2,4-imidazolidinedione.
Q: What is the safety information for 5,5-Dimethylhydantoin?
A: Safety information for 5,5-Dimethylhydantoin: S24/25.
Q: What is the molecular formula of 5,5-Dimethylhydantoin?
A: Molecular formula of 5,5-Dimethylhydantoin is C5H8N2O2.
Q: How is the water solubility of 5,5-Dimethylhydantoin?
A: Water solubility of 5,5-Dimethylhydantoin: H2O: 0.1 g/mL hot, clear | soluble.
Q: What is the English name of 5,5-Dimethylhydantoin?
A: The English name of 5,5-Dimethylhydantoin is 5,5-Dimethylhydantoin.

 5,5-Dimethylimidazolidine-2,4-dionefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
Henan Tianfu Chemical Co., Ltd.
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Chemsrc provides 5,5-Dimethylimidazolidine-2,4-dione(CAS#:77-71-4) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of 5,5-Dimethylimidazolidine-2,4-dione are included as well.>> amp version: 5,5-Dimethylimidazolidine-2,4-dione

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