Technical Information Uvinul 3050 - BASF

1 UV absorber for plastics and paintsTechnical InformationTI/P 3141 eJuly 1999 (PW)Supersedes edition dated September 1995 = Registered trademark ofBASF AktiengesellschaftUvinul 3050 Colorants and Finishing ProductsSupplement for Technical Information textsIn Germany a new section ( 15 a) has been included in the secondamendment to the German Chemical Law:Sale of dangerous substances"It is unlawful to sell or offer for sale a dangerous substance without indicating in accordance with 3 a Section 1 the dangers relating to thesubstance."Substances given in this brochure that come under 15 a are marked withthe numbers [1] [15]. These numbers relate to the indications of dangergiven in 3 a of the German Chemical Law (see key below):[1]Explosive[2]Oxidizing[3]Extrem ely flammable[4]Highly flammable[5]Flammable[6]Very toxic[7]Toxic[8]Harmful[9]Corrosive[10]I rritant[11]Sensitizing[12]Carcinogenic[1 3]Toxic for reproduction[14]Mutagenic[15]Dangerous for the environmentThe following products given in this Technical Information are currentlyaffected: Uvinul 3050[8, 11, 15]2 Uvinul 3050 NatureUV absorber2,2 ,4,4 -TetrahydroxybenzophenoneC13H10O5 Molecular mass246 CAS formYellowish powderStorageKeep product dry and protect containers from damage.

2 Reseal containerstightly after point195 197 CDensity at 25 g/cm3 Solubility ( at 30 C)Water< 1 Methanol50 Ethyl acetate10 Methyl ethyl ketone22 Toluene< 1 OOHOHHOHO3 Transmittance spectra (methanol, 1 cm cuvette)ApplicationThanks to its wide absorption band, which extends far into the UV-Arange, Uvinul 3050 is very suitable for applications in which an optimum filter effect up to the boundary with visible light is desired. Uvinul 3050 isused in linear polyesters or optical articles made from poly[diethylene glycol bis(allyl carbonate)]. Uvinul 3050, for instance, drastically reduces the UV transmittance oflenses produced from this material (see table below).

3 Transmittance of allyl carbonate lenses:WavelengthWithout 3050 With UV absorber is applied by dipping the lenses in a 1% aqueous solu-tion of Uvinul 3050 heated to about 100 applications are: Alkyd resins Phenolic resins Fluorescent pigments PUR systems Oil paints Polymer dispersionsMin. 0300460 Wavelength (nm)Transmittance34040090807060504030201 0 Max. g/l4 SafetyBASF knows of no ill effects that could have resulted from using Uvinul3050 for its intended purpose in accordance with sound to the experience we have gained over many years and otherinformation at our disposal, Uvinul 3050 is not harmful to health, providedthat it is used properly, due attention is given to the precautions necessaryfor handling chemicals, and the Information and advice given in our SafetyData Sheets are Information submitted in this publication is based on our currentknowledge and experience.

4 In view of the many factors that may affectprocessing and application, these data do not relieve processors of theresponsibility of carrying out their own tests and experiments; neither dothey imply any legally binding assurance of certain properties or of suitabil-ity for a specific purpose. It is the responsibility of those to whom we sup-ply our products to ensure that any proprietary rights and existing lawsand legislation are AktiengesellschaftMarketing Welt Pigmente/Kunststoffindustrie67056 Ludwigshafen, GermanyPrinted in Germany