Registration Dossier

Administrative data

Endpoint:
vapour pressure
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Justification for type of information:
Decomposition and CO2 development of pure zinc carbonate starts at ca. 200°C.

Data source

Referenceopen allclose all

Reference Type:
review article or handbook
Title:
Gmelins Handbuch der anorganischen Chemie, 8. völlig neu bearbeitete Auflage - Zink Ergänzungsband
Author:
E. H. Erich Pietsch
Year:
1956
Bibliographic source:
Verlag Chemie, GmbH, Weinheim/Bergstr.
Reference Type:
publication
Title:
Dynamic and controlled rate thermal analysis of hydrozincite and smithsonite
Author:
Veronika Vágvölgyi, M. Hales, W. Martens, J. Kristóf, Erzsébet Horváth and R. L. Frost
Year:
2008
Bibliographic source:
Journal of Thermal Analysis and Calorimetry, Vol. 92 (2008) 3, 911–916

Materials and methods

Results and discussion

Vapour pressureopen allclose all
Temp.:
ca. 80 °C
Vapour pressure:
ca. 0.007 Torr
Temp.:
100 °C
Vapour pressure:
ca. 4.4 Torr
Transition / decomposition
Key result
Transition / decomposition:
yes
Transition temp.:
ca. 200 °C

Any other information on results incl. tables

Zinc carbonate decomposes at elevated temperatures [ Gmelins Handbuch der anorganischen Chemie, 8. völlig neu bearbeitete Auflage - Zink Ergänzungsband]

Equilibrium pressure (CO2 development):

 Temp °C  80  100  200  210  230  300
 Torr (CO2)  0.007  4.4  844  1269  2759  27436

Applicant's summary and conclusion