N,N-Diphenyl-p-phenylenediamine CAS#74-31-7
N,N-Diphenyl-p-phenylenediamine CAS#74-31-7 - Image 2
N,N-Diphenyl-p-phenylenediamine CAS#74-31-7 - Image 3
N,N-Diphenyl-p-phenylenediamine CAS#74-31-7 - Image 4

N,N-Diphenyl-p-phenylenediamine CAS#74-31-7

N,N-Diphenyl-p-phenylenediamine is an organic compound used as an antioxidant in rubber and plastic industries. It helps prevent degradation, extending the lifespan of materials. This colorless crystalline solid is valued for its stability and effectiveness in protecting against oxidation.

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N,N-Diphenyl-p-phenylenediamine CAS#74-31-7

N,N-Diphenyl-p-phenylenediamine Chemical Properties
Melting point 143-145 °C(lit.)
Boiling point 220-225 °C0.5 mm Hg(lit.)
density 1.2
refractive index 1.6300 (estimate)
Fp 220-225°C/1mm
storage temp. Store below +30°C.
solubility DMSO (Slightly), Methanol (Slightly)
form Solid
pka 1.85±0.20(Predicted)
color Pale Grey to Very Dark Grey
Water Solubility <0.1 g/100 mL at 20 ºC
Merck 14,3329
BRN 2215944
Stability: Stable. Incompatible with strong acids, strong oxidizing agents
LogP 4.536 (est)
CAS DataBase Reference 74-31-7(CAS DataBase Reference)
NIST Chemistry Reference 1,4-Benzenediamine, N,N’-diphenyl-(74-31-7)
EPA Substance Registry System N,N’-Diphenyl-p-phenylenediamine (74-31-7)
Safety Information
Hazard Codes Xi
Risk Statements 43-52/53
Safety Statements 24-37-61
WGK Germany 1
RTECS ST2275000
TSCA Yes
HS Code 2921 51 90
Hazardous Substances Data 74-31-7(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 2370 mg/kg LD50 dermal Rat 4500 mg/kg

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