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  • 8.18214 - 1,3-Dimethyltetrahydro-2(1H)-pyrimidinone

8.18214 EMD Millipore


1,3-Dimethyltetrahydro-2(1H)-pyrimidinone for synthesis. CAS 7226-23-5, pH 11 (100 g/l, H₂O, 20 °C)., for synthesis

Synonym: Dimethylpropyleneurea, DMPU

  • CAS Number 7226-23-5

  • Linear Formula C₆H₁₂N₂O

  • Molecular Weight 128.17 g/mol

  •  EC Number 230-625-6



Related Categories Biochemicals and Reagents More...
packaging   100 ml in Glass bottle (8182140100)
bp   247 °C (1013 hPa)
expl. lim.     1.6 - 9.3 %(V)
vapor pressure   0.5 hPa (57 °C)
density   1.064 g/cm3 (20 °C)
flash point   121 °C
autoignition temp.   255 °C
mp   -24 °C
pH   11 (100 g/l, H₂O, 20 °C)
LD 50 oral   LD50 Rat 1770 mg/kg
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (GC, area%): ≥ 99.0 % (a/a)
  Density (d 20 °C/ 4 °C): 1.062 - 1.066
  Identity (IR): passes test

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Safety Information

HS Code 
2933 59 95
Hazard Statement(s) 
H302: Harmful if swallowed.
H318: Causes serious eye damage.
H361f: Suspected of damaging fertility.
Precautionary Statement(s) 
P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
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.
P313: Get medical advice/ attention.
Storage class 
10 - 13 Other liquids and solids
WGK 2 water endangering
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
Hazard Pictogram(s) 
GHS05  GHS05
Hazard Pictogram(s) 
GHS07  GHS07
Hazard Pictogram(s) 
GHS08  GHS08
Hazard Symbols 
Harmful  Harmful
Categories of danger 
harmful, irritant, toxic for reproduction
R Phrase 
R 22-41-62
Harmful if swallowed.Risk of serious damage to eyes.Possible risk of impaired fertility.
S Phrase 
S 26-36/37/39
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.
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