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  • 8.04789 - 2-Imidazolidinone hemihydrate

8.04789 EMD Millipore

2-Imidazolidinone hemihydrate

2-Imidazolidinone hemihydrate for synthesis. CAS 121325-67-5, pH 9 - 11 (100 g/l, H₂O, 20 °C)., for synthesis

Synonym: N,N'-Ethyleneurea

  • CAS Number 121325-67-5

  • Linear Formula C₃H₆N₂O * 0.5H₂O

  • Molecular Weight 95.10 g/mol

  •  EC Number 204-436-4



Related Categories Biochemicals and Reagents More...
packaging   50 kg in Fibre carton (8047899050)
bp   132.6 °C (1013 hPa) (anhydrous substance)
vapor pressure   <24 hPa (20 °C)
solubility   950 g/l
density   1.3 g/cm3 (20 °C)
flash point   265 °C
mp   58 °C
pH   9 - 11 (100 g/l, H₂O, 20 °C)
bulk density   720 kg/m3
LD 50 oral   LD50 Rat > 5000 mg/kg
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (ex N): ≥ 97.0 %
  Water (K. F.): ≤ 13.0 %
  Identity (IR): passes test

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Safety Information

HS Code 
2933 29 90
Hazard Statement(s) 
H361f: Suspected of damaging fertility.
H319: Causes serious eye irritation.
Precautionary Statement(s) 
P281: Use personal protective equipment as required.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308 + P313: IF exposed or concerned: Get medical advice/ attention.
Storage class 
10 - 13 Other liquids and solids
WGK 1 slightly water endangering
Carcinogenic compounds and flammable compounds labelled "Highly toxic" or "Toxic": container F. Alkyl sulfates are carcinogenic; Take particular care to avoid inhalation and skin contact. To neutralize alkyl sulfates, add dropwise (from a dropping funnel) to concentrated ice-cool Ammonia solution (Cat.No. 105426) with vigorous stirring. Before placing in container D, check the pH with pH Universal indicator strips (Cat.No. 109535).
Hazard Pictogram(s) 
GHS07  GHS07
Hazard Pictogram(s) 
GHS08  GHS08
Hazard Symbols 
Harmful  Harmful
Categories of danger 
irritant, toxic for reproduction
R Phrase 
R 36-62
Irritating to eyes.Possible risk of impaired fertility.
S Phrase 
S 26-36/37
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing and gloves.
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