Title: 1,2:5,6-Dibenzanthracene
CAS Registry Number: 53-70-3
CAS Name: Dibenz[a,h]anthracene
Molecular Formula: C22H14
Molecular Weight: 278.35
Percent Composition: C 94.93%, H 5.07%
Literature References: From methyl dinaphthyl ketone: Clar, Ber. 62, 350, 1378 (1929); Fieser, Dietz, ibid. 1827; Bachmann, J. Org. Chem. 1, 347 (1937). Separation by chromatography: Winterstein, Schön, Z. Physiol. Chem. 230, 146 (1934). Absorption spectrum: Mayneord, Roe, Proc. Roy. Soc. London A152, 299 (1935). Review: E. Clar, Polycyclic Hydrocarbons Vol. 1 & 2 (Academic Press, New York, 1964). Review of carcinogenic risk: IARC Monographs 3, 178-196 (1973); of toxicology and human exposure: Toxicological Profile for Polycyclic Aromatic Hydrocarbons (PB95-264370, 1995) 487 pp.
Properties: Plates, leaflets from acetic acid. Crystals may be monoclinic or orthorhombic. Sublimes. mp 266°. Sol in petr ether, benzene, toluene, xylene, oils, other organic solvents; slightly sol in alcohol and ether. Insol in water.
Melting point: mp 266°
CAUTION: This substance is reasonably anticipated to be a human carcinogen: Report on Carcinogens, Eleventh Edition (PB2005-104914, 2004) p III-220.

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