×
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

viscosity of methanol-water mixtures at low temps

viscosity of methanol-water mixtures at low temps

viscosity of methanol-water mixtures at low temps

(OP)
Greetings all
I am looking for the viscosity of a 70wt.% methanol-water mixture at -20C, -30C and -40C.  I have looked in the CRC handbook and Perry's to no avail.
Suggestions?

Thanks
StoneCold

RE: viscosity of methanol-water mixtures at low temps

StoneCold:

If you or your organization don't have a physical properties database available, then I recommend you read up on "The Properties of Gases and Liquids"; Reid and Sherwood; McGraw-Hill.  There, in the Viscosity chapter are the recommended methods for handling this problem.

This book is one of the necessary and prerequisite tomes required by all Chemical Engineers - especially those involved in process design.  In my opinion, you should own this book long before you invest in a Perry's Handbook.

I hope this helps.

Art Montemayor
Spring, TX

RE: viscosity of methanol-water mixtures at low temps


StoneCold

From a ChE reprint of 1979, it appears that viscosities of methanol-water mixtures (40% and 90% methanol) comply with the formula μ=bTm which on log-log paper results in a straight line of viscosity vs temperature.  

Thus, if you can find (or measure) two viscosities at higher temperatures you could find the values you are after by drawing a straight line through these two points while extrapolating to the temperatures requested in your post.

RE: viscosity of methanol-water mixtures at low temps

another source worth a shot would be the Dechema Database of binary mixtures. I can't imagine that a MeOH/H2O mixture isn't in it, with every possible ratio of components. In my experience, every university library has a copy of this masterpiece in stock.

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!


Resources