21837-74-1

Basic information

• Product Name: bis(1,3-diphenylpropylidene)hydrazine
• CAS NO: 21837-74-1
• Molecular Formula: C₃₀H₂₈N₂
• Molecular Weight: 416.5567
• Mol File: 21837-74-1.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 562°C at 760 mmHg
• Flash Point: 287°C
• Density: 1.01g/cm³
• Vapor Pressure: 4.45E-12mmHg at 25°C
• Refractive Index: 1.58
• CAS DataBase Reference: bis(1,3-diphenylpropylidene)hydrazine(CAS DataBase Reference)
• NIST Chemistry Reference: bis(1,3-diphenylpropylidene)hydrazine(21837-74-1)
• EPA Substance Registry System: bis(1,3-diphenylpropylidene)hydrazine(21837-74-1)

Safety Data

• Hazardous Substances Data: 21837-74-1(Hazardous Substances Data)

Upstream product

• 5371-55-1 1-hydroxyimino-1,3-diphenylpropane 
• 103-63-9 1-phenyl-2-bromoethane 
• 98-88-4 benzoyl chloride 
• 1083-30-3 dihydrochalcone 
• 71255-48-6 1,3-Diphenylpropylidenamino-oxyessigsaeure 

Downstream Products

• 123200-52-2 rac-1,1',3,3'-tetraphenylazopropane 
• 123200-54-4 meso-1,1',3,3'-tetraphenylazopropane 
• 123200-60-2 rac-1,3,4,6-tetraphenylhexane 
• 123200-60-2 meso-1,3,4,6-tetraphenylhexane 
• 123200-59-9 N,N'-Bis(1,3-diphenylpropyl)hydrazine 
• 123200-52-2 1,1'-Azobis(1,3-diphenylpropane) 

Relevant articles and documents

Determination of the Relative Rates of Addition of Styrene and Acrylonitrile to the 1-(1,3-Diphenylpropyl) and 1-(3-Cyano-1-phenylpropyl) Radicals. Evidence for a Penultimate Effect in Radical Copolymerization

1,1'-Azobis(1,3-diphenylpropane) (1b) and 4,4'-azobis(4-phenylbutyronitrile) (1c) were prepared in overall yields of 10percent and 1.2percent, respectively, both starting from Ba(13)CO3 (99 atom percent).Analysis of end-group concentrations in styrene-acrylonitrile (SAN) copolymers prepared with 1b as initiator allows accurate determination of the relative rates of addition of these monomers (kS/kA) to the 1-(1,3-diphenylpropyl) radical (2b); similarly, analysis of SAN copolymers prepared with 1c allows determination of kS/kA for the 1-(3-cyano-1-phenylpropyl)radical (2c).Significantly different preferences of the radicals for addition of styrene and acrylonitrile were observed; we obtain kS/kA=0.21 +/- 0.01 for 2b and KS/kA=0.52 +/- 0.03 for 2c.These results show that kS/kA for 1-(1-phenylalkyl) radicals is sensitive to substitution γ to the radical center and provide strong support for the existence of a penultimate unit effect in SAN copolymerization.The results are consistent with the penultimate model analysis of SAN copolymerization by Hill, O'Donnell, and O'Sullivan.