CHEMICALS AND CHEMICAL COMPOSITIONS, PIGMENTS AND POWDERS CONSISTING OF SILICA AND/OR SILICATES AND COMBINATIONS OF CHEMICAL SUBSTANCES WHICH INCLUDE SILICA AND/OR SILICATES, AND HAVING A VARIETY OF INDUSTRIAL USES INCLUDING USES AS A FILLER IN PAPER AND RUBBER, AS A PAPER COATING, AS A CONDITIONING AGENT AND AS A COMPONENT OF COSMETICS, DENTIFRICES, AND DETERGENTS