Structural Formula Vector Image
Title: N,N¢-Diphenyl-p-phenylenediamine
CAS Registry Number: 74-31-7
CAS Name: N,N-Diphenyl-1,4-benzenediamine
Additional Names: 1,4-dianilinobenzene; DPPD
Molecular Formula: C18H16N2
Molecular Weight: 260.33
Percent Composition: C 83.05%, H 6.19%, N 10.76%
Literature References: Prepd by condensing hydroquinone or p-aminophenol with aniline: Calm, Ber. 16, 2805 (1883); Clemens, Magoffin, US 2503712 (1950 to Kodak). Purification: Pecherer, US 2833824 (1958 to Hoffmann-La Roche).
Properties: Colorless leaflets from alcohol. Commercial grades are greenish-brown. d 1.20. mp 150-151° (uncorr., Pecherer). bp0.5 220-225°. Sol in monochlorobenzene, benzene, DMF, ether, chloroform, acetone, ethyl acetate, isopropyl acetate, glacial acetic acid. Slightly sol in alcohol. Almost insol in petr ether, water.
Melting point: mp 150-151° (uncorr., Pecherer)
Boiling point: bp0.5 220-225°
Density: d 1.20
Use: Polymerization inhibitor. Antioxidant for rubber, petr oils, feedstuffs.
Therap-Cat-Vet: Antioxidant for feedstuffs.

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