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ERIC Number: EJ1175945
Record Type: Journal
Publication Date: 2018-Apr
Pages: 5
Abstractor: As Provided
ISSN: ISSN-0021-9584
Liquid CO[subscript 2] in Centrifuge Tubes: Separation of Chamazulene from Blue Tansy ("Tanacetum Annuum") Oil via Extraction and Thin-Layer Chromatography
Baldwin, Bruce W.; Kuntzleman, Thomas S.
Journal of Chemical Education, v95 n4 p620-624 Apr 2018
The separation of chamazulene from hydrophilic contaminants present in blue tansy oil provides a visually engaging example of two common techniques: extraction and thin-layer chromatography (TLC). This application uses liquid CO[subscript 2] as a lipophilic solvent to pull a brilliant blue hydrocarbon molecule, chamazulene, out of or through a common hydrophilic material, cellulose. Yellow-green, hydrophilic components remain in a cotton ball or at the lower end of a paper strip. In dramatic fashion, the separation of colored components of blue tansy oil is accomplished with an environmentally sustainable solvent, CO[subscript 2], and an innocuous support material, cellulose. We believe this is the first reported use of liquid CO[subscript 2] in centrifuge tubes to conduct TLC.
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Michigan
Grant or Contract Numbers: N/A