Product Name

  • Name

    4-Bromo-1-methylpyrazole

  • EINECS 605-126-5
  • CAS No. 15803-02-8
  • Article Data20
  • CAS DataBase
  • Density 1.69 g/cm3
  • Solubility
  • Melting Point 185-188 °C
  • Formula C4H5BrN2
  • Boiling Point 197.1 °C at 760 mmHg
  • Molecular Weight 161.001
  • Flash Point 73 °C
  • Transport Information
  • Appearance
  • Safety 26-39
  • Risk Codes 37/38-41
  • Molecular Structure Molecular Structure of 15803-02-8 (4-Bromo-1-methylpyrazole)
  • Hazard Symbols IrritantXi
  • Synonyms Pyrazole,4-bromo-1-methyl- (8CI);1-Methyl-4-bromopyrazole;4-Bromo-1-methyl-1H-pyrazole;
  • PSA 17.82000
  • LogP 1.18260

4-Bromo-1-methylpyrazole Chemical Properties

IUPAC Name: 4-Bromo-1-methylpyrazole
Systematic of 1H-Pyrazole,4-bromo-1-methyl- (CAS NO.15803-02-8): 4-Bromo-1-methyl-1h-pyrazole ; 4-Bromo-1-methylpyrazole ; 1-Mehtyl-4-Bromo-1H-Pyrazole ; 1-Methyl-4-bromo-1H-pyrazole
CAS NO: 15803-02-8
Molecular Formula of 1H-Pyrazole,4-bromo-1-methyl- (CAS NO.15803-02-8): C4H5BrN2
Molecular Weight: 160.9999
Molecular Structure:

H bond acceptors: 2  
Polar Surface Area: 17.82 Å2
Index of Refraction: 1.606
Molar Refractivity: 32.8 cm3
Molar Volume: 95.1 cm3
Surface Tension: 43.2 dyne/cm
Density of 1H-Pyrazole,4-bromo-1-methyl- (CAS NO.15803-02-8): 1.69 g/cm3
Flash Point: 73 °C
Enthalpy of Vaporization: 41.55 kJ/mol
Boiling Point: 197.1 °C at 760 mmHg
Vapour Pressure: 0.543 mmHg at 25°C

4-Bromo-1-methylpyrazole Safety Profile

Hazard Codes: IrritantXi
Risk Statements: 37/38-41 
R37/38: Irritating to respiratory system and skin. 
R41: Risk of serious damage to the eyes.
Safety Statements: 26-39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S39: Wear eye / face protection.
HazardClass: IRRITANT

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