Some Chemical Problems of Today

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Such a sub- stance is technically known as "Monox. " It is appar- ently essentially silicon monoxide, and yet for such a substance the reader would look in vain through the dictionaries of chemistry. It is produced by stealing the oxygen away from silica by heating it in the form of glass-maker's sand in contact with coke in an electric furnace. Under these circumstances the " silicon mon- oxide" flies out from the veritable volcano-like effect of the furnace reaction in the form of a voluminou...s brown smoke so voluminous that when simply shoveled into a box it weighs only about two and a half pounds per cubic foot. So formed, it constitutes an extremely fine, silky-feeling, light-brown, opaque powder, whose prop- erties bid fair to make it a new industrial agent. Thus it becomes powerfully negatively electrostatically charged on the slightest provocation, and because of this it be- 120 FIG. 25. FURNACE FOR MAKING MONOX ON THE TREND OF CHEMICAL INVENTION comes possible to collect it upon a fabric in such a fashion that while it will permit a gas to pass through the fabric unimpeded, it will definitely stop all fine particles, from tobacco smoke to germs.

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