Distillation is a useful method for isolating volatile compounds. Not always mentioned is this: nearly all compounds chemically decompose when heated so distillation is useful only if a compound’s boiling temperature is lower than its decomposition temperature.<\/p>\n\n\n\n
In the days before high vacuum pumps, “steam distillation” (the co-distillation of an organic substance with water) provided a simple means for distilling temperature-sensitive compounds. In this experiment, you will use steam distillation to obtain the “essential oil” of cloves, a typical kitchen spice. You will also experiment with thin-layer chromatography as a means for analyzing clove oil, and dry column flash chromatography as a means for isolating the different components of clove oil.<\/p>\n\n\n\n
Time required: 3 laboratory sessions<\/strong><\/p>\n\n\n\n Continue to Overview…<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":" Distillation is a useful method for isolating volatile compounds. Not always mentioned is this: nearly all compounds chemically decompose when heated so distillation is useful only if a compound’s boiling temperature is lower than its decomposition temperature. In the days before high vacuum pumps, “steam distillation” (the co-distillation of an organic substance with water) provided … Continue reading “Steam Distillation of an Essential Oil”<\/span><\/a><\/p>\n","protected":false},"author":55,"featured_media":0,"parent":5904,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"page-experimenthomepage.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-7380","page","type-page","status-publish","hentry"],"acf":[],"featured_image_src":null,"_links":{"self":[{"href":"https:\/\/blogs.reed.edu\/chemistry201-202-lab-ref-manual\/wp-json\/wp\/v2\/pages\/7380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.reed.edu\/chemistry201-202-lab-ref-manual\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.reed.edu\/chemistry201-202-lab-ref-manual\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.reed.edu\/chemistry201-202-lab-ref-manual\/wp-json\/wp\/v2\/users\/55"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.reed.edu\/chemistry201-202-lab-ref-manual\/wp-json\/wp\/v2\/comments?post=7380"}],"version-history":[{"count":17,"href":"https:\/\/blogs.reed.edu\/chemistry201-202-lab-ref-manual\/wp-json\/wp\/v2\/pages\/7380\/revisions"}],"predecessor-version":[{"id":9889,"href":"https:\/\/blogs.reed.edu\/chemistry201-202-lab-ref-manual\/wp-json\/wp\/v2\/pages\/7380\/revisions\/9889"}],"up":[{"embeddable":true,"href":"https:\/\/blogs.reed.edu\/chemistry201-202-lab-ref-manual\/wp-json\/wp\/v2\/pages\/5904"}],"wp:attachment":[{"href":"https:\/\/blogs.reed.edu\/chemistry201-202-lab-ref-manual\/wp-json\/wp\/v2\/media?parent=7380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}