That site is worth knowing. Still my problem is complicated by the general variety of names given to pigments and the fact that suppliers often mixz the own without being very explicit on their contents. How bad it gets is that I have even seen so-called safe makeups being advertised on the net that contain manganese. Another good site I have come across is
http://www.ci.tucson.az.us/arthazards/medium.html which has a good database.
Jeff