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108-26-9

Name 3-Methyl-2-pyrazolin-5-one
CAS 108-26-9
EINECS(EC#) 203-565-3
Molecular Formula C4H6N2O
MDL Number MFCD00020699
Molecular Weight 98.1
MOL File 108-26-9.mol
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Chemical Properties

Appearance Yellowish powder
Melting point  220-224 °C
Boiling point  183.6°C (rough estimate)
density  1.1890 (rough estimate)
refractive index  1.4327 (estimate)
storage temp.  Sealed in dry,Room Temperature
solubility  Slightly soluble in ethanol.
pka 13.10±0.40(Predicted)
Usage 3-Methyl-5-pyrazolone is used as intermediate for the manufacture of dyestuffs as well as for agrochemicals.
CAS DataBase Reference 108-26-9(CAS DataBase Reference)
NIST Chemistry Reference 3H-pyrazol-3-one, 2,4-dihydro-5-methyl-(108-26-9)
EPA Substance Registry System 108-26-9(EPA Substance)

Safety Data

Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S24/25:Avoid contact with skin and eyes .
WGK Germany  3
RTECS  UQ9451500
TSCA  Yes
HS Code  29331990

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