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Sulfur

RE: Sulfur

Googled ..... Actually using the English spelling, sulphur.

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

Oops, sorry BigInch, looking at the data gain, it must be for solid phase.

RE: Sulfur

some work on the propagation velocity and given the density, you should have the bulk modulus

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

(OP)
C2it,  Yup, need it for the liquid fase.  Thanks for the try.

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

BigInch, volcanomaster asks where the E= equation for Jet fuel came from? Sorry for cross post.

RE: Sulfur

(OP)
As I recall, the original equation was generalized for all  typical liquid hydrocarbon fuels, gasoline, kero, diesel and I think I saw it in "Hydraulics for Pipeliners" from Gulf Publishing. I forgot who wrote that book.  I "refined" some more specific coefficients for each of gasoline, diesel and jet fuels from actual test data and other published sources I've run into over the years.  Is the equation predicting good values for your diesel?

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

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