The Permeability of Glass and Fused Quartz to Ether, Alcohol, and Water at High Pressure

Abstract
The permeability of glass and fused quartz to water, alcohol and ether and its relation to pressure windows has been studied. These liquids are shown to penetrate to considerable depths if the pressure is maintained for as long as fifteen minutes, in which case the pieces of glass or quartz are shattered if the pressure is rapidly released. However, if the pressure is released over a period of several days little or no breakage occurs. It is, therefore, likely that much of the difference in the behavior of pressure windows as different liquids are used in contact with the windows is due to their ability to penetrate the glass or quartz.

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