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Dry-Ice Bath Based on Ethylene Glycol Mixtures

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Craig M. Jensen

Department of Chemistry, University of Hawaii at Manoa, Honolulu, HI 96822

Do W. Lee

Department of Chemistry, Marquette University, Milwaukee, WI 53201

J. Chem. Educ., 2000, 77 (5), p 629

DOI: 10.1021/ed077p629

Publication Date (Web): May 1, 2000

Abstract

Bath mixtures of ethanol and ethylene glycol in dry ice produce sustainable constant temperatures over the range from -12 to -78 °C, which show a linear relationship between the bath temperature and the volume fraction of ethylene glycol. Our bath is less toxic than previously reported mixtures of ortho- and meta-xylene, and our mixture does not intractably solidify as will dry ice slurries of xylenes. Moreover, the cost of this mixture is less than that of the xylene mixtures.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Laboratory Instruction

Keywords (Feature):

Cost-Effective Teacher

Keywords (Subject):

Laboratory Equipment / Apparatus

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This article has been cited by 2 ACS Journal articles (2 most recent appear below).

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Received: August 03, 2009

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Article

Dry-Ice Bath Based on Ethylene Glycol Mixtures