Synonyms: Silicon,dihydroxy[29H,31H-phthalocyaninato(2-)-N29,N30,N31,N32]-, (OC-6-12)-; Silicon,dihydroxy[phthalocyaninato(2-)]- (7CI,8CI); 29H,31H-Phthalocyanine, siliconcomplex; 29H,31H-Phthalocyanine, silicon deriv.; (Phthalocyaninato)silanediol;Dihydroxy(phthalocyaninato)silicon; Dihydroxysiliconphthalocyanine; Siliconphthalocyanine dihydroxide