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calorie

Non-SI unit of energy. There are three differently defined calories: thermochemical calorie (cal th = 4.184 J), international steam table calorie (cal IT = 4.1868 J), 15 °C calorie (cal 15 = 4.1855 J), however only the symbol cal is usually used.
Source:
PAC, 1996, 68, 957 (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 964
Related index:
IUPAC > Gold Book > math/physics > units
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.C00784.
Original PDF version: http://www.iupac.org/goldbook/C00784.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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