604 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Zahncreme 2 Natrium'monofluorphosphat 0,570 g, Natriumfluorid 0,055 g (Fluoridionen 100 mg), Natriumbenzoat 4,0 g, Eugenol 0,025 g, Methyl-p-hydroxybenzoat 0,100 g, Excip. ad 100 g. Zahncreme 3 Calciumfluorid 0,180 g, Natriumfiuorid 0,250 g (Fluoridionen 200,7mg), Natriumbenzoat 4,0 g, Eugenol 0,025 g, Natriumcarragenat 1,25 g, Calcium- carbonat 26,00 g, gefiillte Kieselsiiure 6,00 g, Tricalciumphosphat 4,00 g, Na- triumlaurylsulfat 2,00 g, Natriumhexametaphosphat 0,20 g, Methyl-p-hy- droxybenzoat 0,100 g, Saccharin 0,040 g, SorbitliSsung 70% ig 25,00 g, iither. CJle 0,120 g, Menthol 0,070 g, Phenol (offizinell) 0,010 g, Farbe q. s., destill. Wasser ad 100,0 g. Zahncreme 4 Natriummonofiuorphosphat 0, 4545 g, Aluminiumfiuoridtrihydrat 0,1013 g (Fluoridionen 101,8 rag), Dinatriumphosphat 0,1045 g, neutrales Natrium- phosphat 12 H._,O 0,2015 g, Methyl-p-hydroxybenzoat 0,100 g, Saccharin 0,0398 g, Magnesiumtrisilikat 5,00 g, Natriumbenzoat 4,00 g, Natriumcarra- genat 1,25 g, gefiillte Kiesels•iure 6,00 g, gefiillte Kreide 26,00 g, Natrium- laurylsulfat 2,00 g, SorbitliSsung 70 '%ig 25,00 g, iitherische CJle u. Farbe q. s., destill. Wasser ad 100 g. Zahncreme 5 Handelstibliche Zahncreme, deren genaue Zusammensetzung uns nicht bekannt ist, reit Ausnahme des Gehalts an Fluoridionen, der 0,100 g F- als Natrium- monofiuorphosphat betrug. Literatur (1) M. Hanocq, M.-O. Schmitz-Masse und M. Herpol-Borremans, (erg•inzen nach erscheinen des 1. Teils) (2) H. H. Willard and O. B. Winter, Volumetric method of determination of fluorine, Ind. Chem. Anal. Ed., 5, 7 (1933). (3) W. Oelschlager, Zur Bestimmung geringster Fluormengen, Z. Anal. Chem., 191, 408 (1962). (4) R. F. Brewer and G. F. Liebieg, Improved multiple all-glass distillation appar.atus for determination of fluorine in plant samples, Anal. Chem., 32, 1373 (1960). (5) M. Buck, Die Bestimmung kleiner Fluorgehalte in Pfianzen, Z. Anal. Chem., 193, 101 (1963). (6) S. Henry, Recherche et d•termination du fluor dans les aliments par vole chimique, Rev. Ferm. Ind. Alim., 23, 80 (1960).

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