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8358253 
Journal Article 
A Semi-micro Calorimeter for Measuring Heat Capacities at Low Temperatures 
Stull, DR 
1937 
Yes 
Journal of the American Chemical Society
ISSN: 0002-7863
EISSN: 1520-5126 
59 
12 
2726-2733 
English 
The construction and operation of a calorimeter suitable for determining specific heats together with heats of transition and fusion of organic compounds over the temperature range 100 to 320°K. has been described. The apparatus possesses the advantage of not employing a vacuum, and requiring only a 5- or 6-ml. sample. The following compounds have been measured by this method: toluene, carbon tetrachloride, fluorobenzene, chlorobenzene, bromobenzene, iodobenzene, and the five isomeric hexanes. Two anomalies were brought to light. The specific heat of n-hexane showed a “hump” in the liquid state. The solid state of 2,2-dimethylbutane showed a large heat of transition some 50° below its melting point. © 1937, American Chemical Society. All rights reserved.