ChemicalBook CAS DataBase List 77-71-4

77-71-4

Name	5,5-Dimethylhydantoin
CAS	77-71-4
EINECS(EC#)	201-051-3
Molecular Formula	C5H8N2O2
MDL Number	MFCD00005266
Molecular Weight	128.13
MOL File	77-71-4.mol

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

Chemical Properties

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

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 . less more
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 . less more
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 less more

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