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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<strong>Glycerol</strong> Detection <strong>and</strong> Estimation.<br />
When in a state <strong>of</strong> reasonable purity end<br />
concentration glycerol may be recognized by its<br />
physical properties. No other substance<br />
likely to be met with exhibits the combined<br />
characteristics <strong>of</strong> a dense viscous liquid <strong>of</strong><br />
sweet taste <strong>and</strong> neutral reaction? a mis-<br />
cibility with water <strong>and</strong> alcohol in all pro-<br />
portions; volatile at a high temperature; <strong>and</strong><br />
a burning with a blue flame when kindled,<br />
leaving no carbonaceous residue.<br />
The most characteristic property <strong>of</strong><br />
glycerol is its behavior when heated in a<br />
concentrated state with potassium hydrogen<br />
sulphate, whereby it is converted into<br />
acrolein ( C H ) with the elimination <strong>of</strong><br />
3 4<br />
water (CHO„/Z\° — CHO / 2H0)<br />
383^ 34 2<br />
The acrolein is recognizable by its extremely<br />
penetrating odor, resembling that <strong>of</strong> burning<br />
fat, <strong>and</strong> its property <strong>of</strong> causing the eyes to<br />
water. If the vapors be passed into water,<br />
the warm solution will be foiind to have the<br />
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