A Non-Mercury Thermometer Alternative for Use in Older Melting Point Apparatuses

Autor/inn/en	Ongley, Lois K.; Kern, Clayton S.; Woods, Barry W.
Titel	A Non-Mercury Thermometer Alternative for Use in Older Melting Point Apparatuses
Quelle	In: Journal of Chemical Education, 85 (2008) 9, S.1263-1264 (2 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
Schlagwörter	Organic Chemistry; Science Equipment; Measurement Equipment; Equipment Evaluation; Laboratory Experiments; Comparative Analysis; College Science; Secondary School Science; Maine + Suchen Sie Ihr Suchwort? Organische Chemie; Messinstrument; Laboratory work; Laborarbeit
Abstract	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.) (As Provided).
Anmerkungen	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
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10