titanium dioxide, tio2 on dark surface. white chemical powder on laboratory spatula, close-up. food additive e171. titanium

titanium dioxide food additive e171 dry powder white spatula oxide chemical alimentary pigment titania phosphonic acid toothpastes formula tio2 pw6 77891 coloring number consumption synthetic pure catalysts adsorption paints cosmetic products thickener crystal alumina silica thickening agent carcinogen banned zinc colorants ingredient chemistry molecular nutritional supplement science substance inorganic compound waterinsoluble makeup nano research texture dark surface laboratory close-up used skin care surface close-up e171 thickener