kieselguhr

Definitions

Examples

• Nitroglycerine, when absorbed in a porous earth called 'Kieselguhr', is called dynamite.

• Kieselguhr, or simply guhr, absorbs twice its weight of nitroglycerine; cork charcoal absorbs nine times its weight.

• Kieselguhr is a very powerful adsorbent, and only a little will do much good; it is, however, hardly sufficient alone.

• The best substitute for "kieselguhr" is ashes of bog-head coal.

• Generally a small percentage of the kieselguhr is replaced by a mixture containing sodium and ammonium carbonates, talc and ochre.