Water is especially preferred since it is of low cost and readily available, and it acts as {TAIL ~ an excellent heat sink} to dissipate the intense heat generated beneath the fluid blanketing layer when the oxygen in {HEAD ~ the gas} contacts the elemental phosphorus contained in the material 
Water is especially preferred since it is of low cost and readily available , and it acts as { TAIL ~ an excellent heat sink } to dissipate the intense heat generated beneath the fluid blanketing layer when the oxygen in { HEAD ~ the gas } contacts the elemental phosphorus contained in the material
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