Sulfur
Sulfur
(OP)
What do we know about the bulk modulus of molten sulfur?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: Sulfur
Atomic number 16
Atomic / Molecular Weight 32.066 gmol-1
Density 2086 kgm-3
Lattice constant 1046 fm
Melting Point 388.46 K
Boiling Point 717.834 K
Flash Point 480 K Clip
Linear expansivity 0.000064 K-1
Specific heat capacity 732 Jkg-1K-1
Bulk Modulus of Rigidity 7700000000 Nm-2
Electromotive Series 0.51 V
Molten sulphur has a wierd temperature / viscosity curve. I suspect bulk mod. may be wierd too.
Cheers.
RE: Sulfur
RE: Sulfur
what temperature?
RE: Sulfur
True, pure molten sulfur shows bizarre properties, for example, its viscosity rises up to a maximum at 200oC and thereafter falls until it reaches its b.p. at 444.6oC. This has been explained by the progressive cleavage of the Sx rings and the formation of catenasulfur species.
Therefore, the expected values for the bulk modulus should vary.
In http://arxiv.org/pdf/physics/0405012, p.13, one finds the acoustic velocities at various temperatures.
The densities are:
1.819 g/cm3 at 115oC dropping by a factor of 0.0008 g.cm-3.oC-1 up to 160oC.
I hope this info. is sufficient to estimate some values of the bulk modulus, which (to my grasping) should be around 34×107 kg/cm2.
RE: Sulfur
Yes, I was aware of the viscosity anomalies, but couldn't find ANYTHING on the bulk modulus (except as a solid). I also suspected an anomaly exists at its polymerization point, so I thought I'd better ask.
25362,
Looks like you got it. With a good reference too.
Big Thanks... again!
http://virtualpipeline.spaces.msn.com
RE: Sulfur
RE: Sulfur
http://virtualpipeline.spaces.msn.com
"What gets us into trouble is not what we don't know, its what we know for sure" - Mark Twain