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ERIC Number: EJ829538
Record Type: Journal
Publication Date: 2008-Sep
Pages: 2
Abstractor: As Provided
Reference Count: 11
ISBN: N/A
ISSN: ISSN-0021-9584
A Non-Mercury Thermometer Alternative for Use in Older Melting Point Apparatuses
Ongley, Lois K.; Kern, Clayton S.; Woods, Barry W.
Journal of Chemical Education, v85 n9 p1263-1264 Sep 2008
The State of Maine seeks to eliminate most mercury use. This includes removing mercury thermometers from secondary schools and discouraging Hg use in other educational institutions. Alternatives to mercury thermometers in chemical laboratory work include non-mercury thermometers, temperature probes, and thermocouples. In organic chemistry mercury thermometers are commonly used in melting temperature apparatuses such as Mel-Temp instruments. The melting point temperatures of six organic compounds measured with a calibrated thermocouple were not statistically different from published melting points. Lab-calibrated thermocouples are statistically accurate and economically reasonable substitute for mercury thermometers to measure the melting point temperature for organic compounds in older Mel-Temp devices. (Contains 4 tables.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail: jchemed@egpp.com; Web site: http://www.jce.divched.org
Publication Type: Journal Articles; Reports - Descriptive
Education Level: High Schools; Higher Education; Postsecondary Education; Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Maine