Title: Dioxybenzone
CAS Registry Number: 131-53-3
CAS Name: (2-Hydroxy-4-methoxyphenyl)(2-hydroxyphenyl)methanone
Additional Names: 2,2¢-dihydroxy-4-methoxybenzophenone; 4-methoxy-2,2¢-dihydroxybenzophenone; benzophenone-8
Trademarks: Cyasorb UV 24 (obsolete) (Am. Cyanamid); Spectra-Sorb UV 24 (Am. Cyanamid)
Molecular Formula: C14H12O4
Molecular Weight: 244.24
Percent Composition: C 68.85%, H 4.95%, O 26.20%
Literature References: Prepn: Hardy et al., US 2853521 (1958 to Am. Cyanamid).
Properties: Yellow powder, mp 68°. Soly in g/100 ml at 25°: ethanol 21.8; isopropanol 17; propylene glycol 6.2; ethylene glycol 3.0; n-hexane 1.5.
Melting point: mp 68°
Therap-Cat: Ultraviolet screen.
Keywords: Ultraviolet Screen. |