Rust Particle Density as a Function of Diameter

[Mattpdrexel]

Hi all,

I would like to determine an approximate relationship between a rust particle's diameter and it's density.

Wikipedia reports the density of Fe2O3 as 5.242 g/cm3 (solid). I would consider this the upper limit on rust density, which should decrease with increasing diameter. However, I have no other source to base a range of density values on as a function of particle diameter.

If anyone is aware of a density value for rust, please inform me.

Thanks!

 

[cloa]

Rust is highly variable. Its various level of hydration with multiple oxides of iron- FeO, Fe2O3, Fe3O4(mixed oxide). It practice it formed jagged pieces when separated so what are saying its the diameter. True its most commonly Fe2O3. It will have various degrees voids so its going to be no simple relationship between diameter and density. What's the purpose of this sounds like a student posting which is discouraged.

 

[mrfailure]

Also, over time it will have various degrees of hydration until it dries out, also changing density.

Aaron Tanzer

http://www.lehightesting.com