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  • 8.07080 - 3-Methyl-1-phenyl-2-pyrazolin-5-one

8.07080 EMD Millipore


3-Methyl-1-phenyl-2-pyrazolin-5-one for synthesis. CAS 89-25-8, pH 4.0 - 4.4 (H₂O, 20 °C) (saturated aqueous solution)., for synthesis

Synonym: 1-Phenyl-3-methyl-5-pyrazolone

  • CAS Number 89-25-8

  • Linear Formula C₁₀H₁₀N₂O

  • Molecular Weight 174.2 g/mol

  •  EC Number 201-891-0



Related Categories Biochemicals and Reagents More...
packaging   100 g in Glass bottle (8070800100)
bp   191 °C (9.33 hPa)
solubility   3.30 g/l
density   1.12 g/cm3 (20 °C)
mp   127.5 - 129.5 °C
pH   4.0 - 4.4 (H₂O, 20 °C) (saturated aqueous solution)
bulk density   500 kg/m3
LD 50 oral   LD50 Rat 3500 mg/kg
storage temp.   Store below +30°C.
specifications   Assay (GC, area%): ≥ 98.0 % (a/a)
  Melting range (lower value): ≥ 125 °C
  Melting range (upper value): ≤ 129 °C
  Identity (IR): passes test

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Safety Information

HS Code 
2933 19 90
Hazard Statement(s) 
H302: Harmful if swallowed.
H319: Causes serious eye irritation.
Precautionary Statement(s) 
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Storage class 
10 - 13 Other liquids and solids
WGK 1 slightly 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) 
GHS07  GHS07
Hazard Symbols 
Irritant  Irritant
Hazard Symbols 
Harmful  Harmful
R Phrase 
R 22-36
Harmful if swallowed.Irritating to eyes.
S Phrase 
S 22-26-25
Do not breathe dust.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Avoid contact with eyes.
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