[Brethg]

Hi Guys and Gals

Ok so i have a problem that i wondered if someone could help me with?

This is not homework its actually to do with my job.

I am working on a industrial process and have an issue with uniform mixing of active ingrediant and excipiant.

So basically i have one process that works great.  1 primary thick viscous liquid which has 3 less viscous liquids mixed into it via a inline mixer. This process produces very stable and reliable result with variation of 2-4 mg in a continuous process of 1,300 kg/hr

Now i am trying to replicate this with 3 different liquids being mixed into the primary.

So i need a form of calculation to work out what the liquid densitys of each liquid are.

Just to complicate things this also need to be at 100 'C.

The aim of this is to be able to contrast the non working process with the working process by compairing the combined densitys of everything going into the mixer.

Hope this is clear enough...

basically i need a method of calculating the liquid dencitys of compounds at a particular temperature, without doing any practical work.

Hope you guys can help

Thanks

[Arkcon]

Lots of information here, but to directly ask your question:  You need the density of 4 liquids, and you want to calculate the density.  You can do that, once you make some measurements, or maybe you have an instrument that can determine it for you.  There may be tables to correct for the temperature, or you may want to make the determination at or near 100 C.

I am not a chemical engineer, but it sounds to me like the viscosity is just as important as the density for your particular application.  So you may well need an instrument to measure that, as well..

[curiouscat]

I am not a chemical engineer, but it sounds to me like the viscosity is just as important as the density for your particular application.  So you may well need an instrument to measure that, as well..

A quick and dirty trick is to measure the efflux time through a small sharp hole. Viscosity is notoriously temp. sensitive; even more so than density.