6742. Octabenzone

Nomenclature

CAS number: 1843-05-6
[2-Hydroxy-4-(octyloxy)phenyl]phenylmethanone; 2-hydroxy-4-(octyloxy)benzophenone; benzophenone-12; Spectra-Sorb UV 531 (Am. Cyanamid).
C21H26O3; mol wt 326.43.
C 77.27%, H 8.03%, O 14.70%.

Description and references

Prepn: Armitage et al., US 3098842 (1963 to du Pont).

Chemical structure

Properties

Crystals, mp 45-46°.

Use

To stabilize polyethylene against deterioration by ultraviolet light.

Therapeutic Category

Ultraviolet screen.

Keywords

Ultraviolet Screen