3329. N,N′-Diphenyl-p-phenylenediamine

Nomenclature

CAS number: 74-31-7
N,N-Diphenyl-1,4-benzenediamine; 1,4-dianilinobenzene; DPPD.
C18H16N2; mol wt 260.33.
C 83.05%, H 6.19%, N 10.76%.

Description and 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).

Chemical structure

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.

Use

Polymerization inhibitor. Antioxidant for rubber, petr oils, feedstuffs.

Therapeutic Category (Veterinary)

Antioxidant for feedstuffs.