| http://www.w3.org/ns/prov#value | - In contrast to other heavy metals such as lead, tin, antimony, cadmium, chromium, etc., titanium and zinc compounds are non-toxic as a rule (Sax Toxic Substance Data Book, Shizuo Fujiyama, Maruzen, K.K., 360 S. (cited in EP-A 565,235), see also R???mpp Chemie Lexikon Vol. 6, Thieme Verlag, Stuttgart, New York, 9th Edition, 1992, pages 4626-4633 and 5136-5143).
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