Molecular Formula: C₂₀H₁₈N₄O₂
Molar mass: 346.3825 g/mol
Form: Crystalline
Color: Tan
Density: 1.31 g/cm3
Flash Point: 307.6 °C
Melting point: 355 °C
Index of Refraction: 1.68
Boiling Point: 585.1 °C at 760 mmHg
Vapour Pressure: 1.13E-13 mmHg at 25°C
Appearance: Off-white to cream-yellowish crystalline powder
Solubility: Formic acid: 50 mg/mL, clear, yellow 
Structure of  Bispyrazolone (7477-67-0):
                     
XLogP3-AA: 2.4  
H-Bond Donor: 0
H-Bond Acceptor: 4
Canonical SMILES: CC1=NN(C(=O)C1C2C(=NN(C2=O)C3=CC=CC=C3)C)C4=CC=CC=C4
InChI: InChI=1S/C20H18N4O2/c1-13-17(19(25)23(21-13)15-9-5-3-6-10-15)18-14(2)22-
24(20(18)26)16-11-7-4-8-12-16/h3-12,17-18H,1-2H3 
InChIKey: FORCWSNQDMPPOC-UHFFFAOYSA-N

Hazard Codes: Xi
Risk Statements:
43:  May cause sensitization by skin contact
Safety Statements:
36:  Wear suitable protective clothing 
37:  Wear suitable gloves

 Bispyrazolone (7477-67-0) is heterocyclic compounds which also can be called for (4,4'-Bi-3H-pyrazole)-3,3'-dione, 2,2',4,4'-tetrahydro-5,5'-dimethyl-2,2'-diphenyl- ; (4,4'-Bi-2-pyrazoline)-5,5'-dione, 3,3'-dimethyl-1,1'-diphenyl- ; 3,3'-Dimethyl-1,1'-diphenyl-(4,4'-bi-2-pyrazoline)-5,5'-dione ; 4,4'-Bis-(3-methyl-1-phenyl-2-pyrazolin-5-one) ; 3,3'-dimethyl-1,1'-diphenyl-4,4'-bi-5-pyrazolone , and has been used as analytical reagents.
 Bispyrazolone (7477-67-0) is hazardous,so the first aid measures and others should be known.Such as: When on the skin: first,should  flush skin with plenty of water immediatelyfor at least 15 minutes while removing contaminated clothing. Secondly,Get shoesmedical aid . Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.Then get medical aid soon.While ,it's Inhaled: Remove from exposure and move to fresh air immediately.Give artificial respiration While not breathing. When breathing is difficult, give oxygen.And as soon as to get medical aid .Then you have the ingesting of the product : If victim is conscious and alert, give 2-4 cupfuls of milk or water, and get medical aid immediately.
In addition,  Bispyrazolone (7477-67-0) can be stable under normal temperature and pressure conditions, and you must not take it with strong oxidants. And also prevent it to broken down into hazardous decomposition products: irritating and toxic fumes and gases.  Also known its polymerization is hazardous.