Title: Michler's Ketone
CAS Registry Number: 90-94-8
CAS Name: Bis[4-(dimethylamino)phenyl]methanone
Additional Names: 4,4¢-bis(dimethylamino)benzophenone; tetramethyldiaminobenzophenone
Molecular Formula: C17H20N2O
Molecular Weight: 268.35
Percent Composition: C 76.09%, H 7.51%, N 10.44%, O 5.96%
Literature References: Prepn from dimethylaniline + phosgene: Michler, Ber. 9, 716 (1876); Michler, Dupertius, ibid. 1900; from dimethylaniline, AlCl3 and CCl4: Fierz, Koechlin, Helv. Chim. Acta 1, 218 (1918).
Properties: White to greenish leaflets, mp 172°. bp >360° with decompn. Practically insol in water. Sol in alcohol, warm benzene; very slightly sol in ether.
Melting point: mp 172°
Boiling point: bp >360° with decompn
CAUTION: This substance is reasonably anticipated to be a human carcinogen: Report on Carcinogens, Eleventh Edition (PB2005-104914, 2004) p III-173.
Use: In manuf of dyes and pigments.