Viscosity Calculation

[Controlnewb]

I am trying to calculate the viscosity of a 50 baume' solution. The solution is water and NaOH(Sodium Hydroxide).
My question is how would I calculate the viscosity of this solution flowing through a pipe?
I have given values such as:

Pipe Diameter
Specific Gravity
Temperature
Flow
Velocity
Density

I need the viscosity of this solution for a valve sizing calculation that will be run in Smart Plant Instrumentation (INTOOLS). Any help would be greatly appreciated.

Thanks

 

[yank38]

viscosity has to be measured. There are ways to estimate it if you have at least one data point, but accuracy is suspect. Keep in mind that viscosity is very temperature dependent. Check with Caustic Soda mfg and they may have the data you need.