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Physical & Chemical properties

Vapour pressure

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Administrative data

Endpoint:
vapour pressure
Type of information:
other: handbook data
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Secondary literature: handbook with reliable values

Data source

Reference
Reference Type:
review article or handbook
Title:
Magnesium Taschenbuch
Author:
Aluminium-Zentrale Düsseldorf
Year:
2000
Bibliographic source:
Aluminium-Verlag Düsseldorf, 2000, 1. Edition, ISBN 3-87017-264-9, p. 86

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
not applicable: handbook data
GLP compliance:
not specified
Type of method:
other: no data

Test material

Constituent 1
Chemical structure
Reference substance name:
Magnesium
EC Number:
231-104-6
EC Name:
Magnesium
Cas Number:
7439-95-4
Molecular formula:
Mg
IUPAC Name:
magnesium
Details on test material:
- Name of test material: Magnesium
- Substance type: metal
- Physical state: solid

Results and discussion

Vapour pressureopen allclose all
Temp.:
427 °C
Vapour pressure:
0.933 Pa
Remarks on result:
other: solid
Temp.:
527 °C
Vapour pressure:
21.328 Pa
Remarks on result:
other: solid
Temp.:
627 °C
Vapour pressure:
231.542 Pa
Remarks on result:
other: solid
Temp.:
650 °C
Vapour pressure:
372.04 Pa
Remarks on result:
other: solid
Temp.:
650 °C
Vapour pressure:
358.17 Pa
Remarks on result:
other: liquid
Temp.:
727 °C
Vapour pressure:
1 364.058 Pa
Remarks on result:
other: liquid
Temp.:
827 °C
Vapour pressure:
5 792.018 Pa
Remarks on result:
other: liquid
Temp.:
927 °C
Vapour pressure:
19 121.352 Pa
Remarks on result:
other: liquid
Temp.:
1 027 °C
Vapour pressure:
52 056.849 Pa
Remarks on result:
other: liquid
Temp.:
1 105 °C
Vapour pressure:
102 219.51 Pa
Remarks on result:
other: liquid

Any other information on results incl. tables

Because of the high vapor pressure at the melting point temperature (650°C) of Mg it easily sublimates in vacuum.

Applicant's summary and conclusion

Conclusions:
The vapor pressure of the solid Mg at the melting point (650°C) is 372 Pa
The vapor pressure of the liquid Mg at the freezing(/melting point) (650°C) is 358 Pa