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4845-49-2

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Basic Information
CAS No.: 4845-49-2
Name: 2,4-dihydro-2,5-diphenyl-3H-Pyrazol-3-one
Article Data: 73
Molecular Structure:
Molecular Structure of 4845-49-2 (2,4-dihydro-2,5-diphenyl-3H-Pyrazol-3-one)
Formula: C15H12 N2 O
Molecular Weight: 236.273
Synonyms: 2-Pyrazolin-5-one,1,3-diphenyl- (6CI,7CI,8CI); 1,3-Diphenyl-2-pyrazolin-5-one; NSC 59778
Density: 1.17g/cm3
Boiling Point: 368.7°Cat760mmHg
Flash Point: 176.8°C
Safety: Moderately toxic by intraperitoneal route. When heated to decomposition it emits toxic fumes of NOx.
PSA: 32.67000
LogP: 2.32820
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Chemistry

IUPAC  Name: 2,5-Diphenyl-4H-pyrazol-3-one   
Molecular Formula: C15H12N2O
Molecular Weight: 236.29
Freely Rotating Bonds: 2
Polar Surface Area: 23.55 Å2
Index of Refraction: 1.642
Molar Refractivity: 69.36 cm3
Molar Volume: 191.9 cm3
Polarizability: 27.49 ×10-24 cm3
Surface Tension: 50.5 dyne/cm
Density: 1.23 g/cm3
Flash Point: 188.9 °C
Enthalpy of Vaporization: 63.8 kJ/mol
Boiling Point: 388.8 °C at 760 mmHg
Vapour Pressure: 2.99E-06 mmHg at 25°C 
The Cas Register Number of 1,3-Diphenyl-5-pyrazolone is 4845-49-2 .The chemical synonyms of  1,3-Diphenyl-5-pyrazolone (CAS NO.4845-49-2) are 3H-pyrazol-3-one, 1,2-dihydro-2,5-diphenyl- ; 5-Pyrazolone, 1,3-diphenyl-  and   2,5-diphenyl-1,2-dihydro-3H-pyrazol-3-one  .The molecular structure of  1,3-Diphenyl-5-pyrazolone (CAS NO.4845-49-2) is.

Uses

 1,3-Diphenyl-5-pyrazolone (CAS NO.4845-49-2) is used as organic intermediate .

Toxicity Data With Reference

1.    

ipr-mus LDLo:512 mg/kg

     CBCCT*    “Summary Tables of Biological Tests” National Research Council Chemical-Biological Coordination Center. 2 (1950),135.

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Moderately toxic by intraperitoneal route. When heated to decomposition it emits toxic fumes of NOx.