×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Hexafluorobenzene

Hexafluorobenzene

Hexafluorobenzene

(OP)
I am stuck on my design project until I find out the internal pressure of 4cc of Hexafluorobenzene inside a small ampoule at 250C. I am willing to pay for someone to work with me on that and other tracer materials.

RE: Hexafluorobenzene

Sorry, just found out that Tc for this compound is 244degC, so the fluid is either superheated vapor or dense phase at 250degC - so the Antoine constants dont help.

I'd be wary of using the SRK or virial equation to derive this pressure, given its structure. Will write back if I find something that will help.

RE: Hexafluorobenzene

On page 2-356 of Perry 7th edn, reference is made to the API Technical Data Book for Pr > 1.0, which relies on the Pitzer corresponding states model.
But first, you'll have to determine if this ampoule will indeed go into dense phase ( Pr >1.0). The NIST link should help with calculating Zc for this - since this is a student posting (?), you'll have to figure this out yourself.


Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

White Paper – Choosing the Right Spring Loaded Connector
In today’s cost-sensitive world, designers are often driven to specify the lowest cost solution for every aspect of their designs to ensure that their solution is competitively priced and their company remains profitable. However, specifying a low-cost, low-quality connector solution can result in premature failure, considerable re-work costs and damage to reputations. Download Now
eBook – Own the Lifecycle: Sustainable Business Transformation
Increasingly, product and services companies are seeking more information and control in the operational lifecycle of their products, including service and use. Better information about the operational lifecycle, and the ability to use that information, requires more than just unstructured data flowing back from products in the field. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close