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5-amino-2-phenyl-4H-pyrazol-3-one (Molecular Formula: C9H9N3O)
Product Name: 5-amino-2-phenyl-4H-pyrazol-3-one
CAS Registry Number: 4149-06-8
EINECS: 223-974-0  
Synonyms: 5-amino-2,4-dihydro-2-phenyl-;5-amino-2-phenyl-4H-pyrazol-3-one; 4149-06-8; MLS002637685; 3-Amino-1-phenyl-5-pyrazolone; 3H-Pyrazol-3-one; 5-amino-2-phenyl-4H-pyrazol-3-one;3-amino-1-phenyl-2-pyrazolin-5-one;
Molecular Structure:
Molecular Formula: C9H9N3O
Molecular Weight: 175.18726
Density:  1.34g/cm3
Boiling Point:  312.3°Cat760mmHg
Melting Point:  210-215 °C (dec.)(lit.)
Flash Point:  142.7°C
Risk Codes:  S24/25:Avoidcontactwithskinandeyes.;
Safety Statements:  Moderately toxic by intraperitoneal route. When heated to decomposition it emits toxic vapors of NOx.
Hazard Symbols:  Xi: Irritant;
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