Glycerol and spent lye clarification - Illinois Institute of Technology
Glycerol and spent lye clarification - Illinois Institute of Technology
Glycerol and spent lye clarification - Illinois Institute of Technology
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The ace tin method is the one agreed upon at a<br />
conference <strong>of</strong> delegates from American, British,<br />
French, <strong>and</strong> German committees <strong>and</strong> has been confirm-<br />
ed by each <strong>of</strong> the above conmiittees as giving<br />
results nearest the truth on crude glycerines In<br />
general<br />
The column in the above table headed "c.c.<br />
HCl used" refers to the acid equivalent <strong>of</strong> the<br />
sodivun hydroxide used for the saponification <strong>of</strong><br />
the acetin.<br />
As 20 CO. <strong>of</strong> strong NaOH 5 93.4 c.c. Std. HCl<br />
one c.c. <strong>of</strong> HCl is equivalent to .016125 grams <strong>of</strong><br />
glycerol.<br />
93,4 - 41,4 - S2 CO. HCl used for<br />
saponification. (The 41,4 c.c. HCl is that used<br />
to titrate the excess <strong>of</strong> NaOH.<br />
The apparatus is shown in the cut. The<br />
parts, bottles, U tubes, absorption bulb, eto,,<br />
are fastened to the st<strong>and</strong> (by means <strong>of</strong> wire) which<br />
consists <strong>of</strong> an upright st<strong>and</strong> <strong>and</strong> two oross rods.<br />
An aspirator ia attached by means <strong>of</strong> which the<br />
evolved carbon-dioxide is drawn to the Geissler<br />
25
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