Check date values in: |accessdate= (help); Unknown parameter |accessyear= ignored (|access-date= suggested) (help)NIOSH Pocket Guide to Chemical Hazards"Fresh doubt over America map", bbc.co.uk, 30 July 2002Titanium Dioxide Classified as Possibly Carcinogenic to Humans, 2007 (if inhaled as a powder)A description of TiO2 photocatalysis සංරක්ෂණය කළ පිටපත 2007-01-12 at the Wayback MachineCrystal structures of the three forms of TiO2 සංරක්ෂණය කළ පිටපත 2009-01-31 at the Wayback Machine"Architecture in Italy goes green", Elisabetta Povoledo, International Herald Tribune, November 22, 2006"A Concrete Step Toward Cleaner Air", Bruno Giussani, BusinessWeek.com, November 8, 2006"Titanium Dioxide Classified as Possibly Carcinogenic to Humans", Canadian Centre for Occupational Health and Safety, August, 2006vteSunscreening agents approved by the US FDA or other agenciesUVA: 400–315 nmUVB: 315–290 nmchemical agents unless otherwise notedUVA filtersAvobenzone (Parsol 1789)Bisdisulizol