5 replies to this topic

[maheshmech52]

how to find out vapor pressure of an element using antoine equation coefficients?

Edited by maheshmech52, 21 November 2009 - 12:44 AM.

[Zauberberg]

log(P) = A-B/(T+C), where P (vapor pressure) is in mmHg and T (temperature) is in Celsius. A, B, and C are Antoine coefficients.

Attached Files

•  Antoine_coefficient_table.pdf   84.75KB   121 downloads

[breizh]

An other resource from one of the jedis (Ankur).
Hope it helps
Breizh

[maheshmech52]

log(P) = A-B/(T+C), where P (vapor pressure) is in mmHg and T (temperature) is in Celsius. A, B, and C are Antoine coefficients.

thank you for this information, but i'm expecting antoine coefficients for following elements
log(P)=A+(b/T)+(C/Square of T) wher T is Temperature and P is vapor pressure; A,B and C are Antoine Coefficents

can i get Antoine coefficients for the following equation:
Manganese Oxides
Cromium Oxides
Iron Oxides
Magnesium Oxides
Aluminium Oxides
Silicon Oxides

i'm requesting you all to send Antoine coefficients for above elements it is very helpfull for my research work.....

[latexman]

The metal oxides you have asked about are solids up to very high temperatures. They have extremely low vapor pressures. I have never seen vapor pressure data or Antoine constants for them, but my experience is in organic compounds so it may be a case of inopportunity. I'm not sure you are going to find what you want, but have you exhausted an internet and literature search?

[maheshmech52]

The metal oxides you have asked about are solids up to very high temperatures. They have extremely low vapor pressures. I have never seen vapor pressure data or Antoine constants for them, but my experience is in organic compounds so it may be a case of inopportunity. I'm not sure you are going to find what you want, but have you exhausted an internet and literature search?

this equation is given by the Dennis
and he given manganese and iron vapor pressure coefficients.....
here i'm giving those coefficients.....
can u try for other i've mentioned before.....

Attached Files

•  Antoine Coefficients.pdf   186.24KB   59 downloads

Edited by maheshmech52, 25 November 2009 - 11:20 AM.