Authors:
F. Xu Chinese Academy of Sciences Thermochemistry Laboratory, Dalian Institute of Chemical Physics Dalian 110623 P.R. China Dalian 110623 P.R. China

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L. Sun Chinese Academy of Sciences Thermochemistry Laboratory, Dalian Institute of Chemical Physics Dalian 110623 P.R. China Dalian 110623 P.R. China

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Z. Tan Chinese Academy of Sciences Thermochemistry Laboratory, Dalian Institute of Chemical Physics Dalian 110623 P.R. China Dalian 110623 P.R. China

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X. Lan Chinese Academy of Sciences Thermochemistry Laboratory, Dalian Institute of Chemical Physics Dalian 110623 P.R. China Dalian 110623 P.R. China

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P. Yu Chinese Academy of Sciences Thermochemistry Laboratory, Dalian Institute of Chemical Physics Dalian 110623 P.R. China Dalian 110623 P.R. China

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T. Zhang Chinese Academy of Sciences Thermochemistry Laboratory, Dalian Institute of Chemical Physics Dalian 110623 P.R. China Dalian 110623 P.R. China

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Abstract  

The heat capacities of berberine sulphate [(C20H18NO4)2SO43H2O] were measured from 80 to 390 K by means of an automated adiabatic calorimeter. Smoothed heat capacities, HT-H298.15 and ST-S298.15 were calculated. The loss of crystalline water started at about 339.30.2 K, and its peak temperature was 365.80.6 K. The peak temperature of decomposition for berberine sulphate was at about 391.40.4 K by DSC curve. TG-DTG analysis of this material was carried out in temperature range from 310 to 970 K. TG and DSC curves show that there is no melting in the whole heating process.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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