Flow Chemistry Calculators

Asynt Flow: a wide range of flow chemistry tools for chemists worldwide

This handy resource, below, allows the flow chemist to calculate a range of experiment parameters without the need for software and automation.

Back Pressure Calculator

Reaction Time Calculator

Flow Rate Calculator
This calculator allows you to find the minimum pressure required to keep the solvent in the liquid state for your experiment. Simply choose your solvent and enter your desired working temperature. If your solvent is not listed choose ‘Other’ and enter in the entropy of vaporization and known boiling point. This calculator allows the user to estimate the potential reaction rate and therefore residence time using the Arrhenius rate equation.
Just fill in your current residence time and reaction temperature and “calculate” the corresponding residence time or temperature required.		 This calculator allows you to configure a range of fluidic paths for up to two-step reactions, calculating the pump flow rates you require. Variable parameters include flow reactor volume, reagent solution molarities, stoichiometry and residence times. You can even set the length of your connecting tubing.

 

Instructions:

This calculator that allows you to find the minimum pressure required to keep the solvent liquid when using our FlowSyn™ unit.

Simply choose your solvent and enter your desired working temperature. If your solvent is not listed choose 'Other' and enter in the entropy of vaporization and known boiling point.

Notes:
* Exact entropy of vaporization unknown

** This is a suggested value based upon an estimated calculation of the entropy of vaporization using the boiling point of the solvent at atmospheric pressure (Trouton-Hildebrand-Everett rule) and is intended to be used as a guide only.

Solvent:
Entropy of vaporization (JK-1mol-1):
Boiling point at atmospheric pressure: °C
Desired working temperature: °C
Minimum BPR pressure:

Unit of pressure:
psi bar
Instructions:

(i) Enter a known reaction temperature (Temperature 1) and time (Time 1)

then either:

(ii) Enter a new reaction temperature (Temperature 2) and click “Calculate” to give the corresponding new reaction time (Time 2)

or

(iii) Enter a new reaction time (Time 2) and click "Calculate" to give the required temperature (Temperature 2).

Notes:
Calculations use the Arrhenius equation with a null frequency factor (A) and an Activation Energy (EA) of 50kJ mol-1

Known reaction temperature and time:

Temperature 1:  °C                      Time 1: ::: (days) (hr) (min) (sec)
Unknown reaction temperature or time:

Temperature 2:  °C                      Time 2: ::: (days) (hr) (min) (sec)
Configuration:


Reactor Vol. 1: ml

Reactor Vol. 2: ml



Connection Vol. A: ml

Connection Vol. B: ml

Connection Vol. C: ml

Connection Vol. D: ml

Chemistry:

Molarity (M):

A:

B:

C:

D:


Stoichiometry:









Res. Time 1:  :: (hr) (min) (sec)

Res. Time 2:  :: (hr) (min) (sec)
Delay A Con. Vol. A Delay B Con. Vol. B Delay C Con. Vol. C Delay D Con. Vol. D Reac. Vol. 1 Res. Time 1 Reac. Vol. 2 Res. Time 2
A: ml/min   B: ml/min   C: ml/min   D: ml/min  

A: ml/min   B: ml/min   C: ml/min   D: ml/min  
Delay A: :: Delay B: ::

Delay C: :: Delay D: ::

Want to know more?

If you need any further information or assistance, please contact us via [email protected] or complete and submit the short form below.  You can also view our extensive range of Flow Chemistry and combined photochemistry & Flow Chemistry tools here on the Asynt website.

Request more info

  • Please contact us by completing the short form below so that we can respond with all the information you require. Thank you - we will reply soon...

  • Asynt will only send relevant information. We will never share your data with any third party and we promise not to spam you. Full details in our privacy policy. If you'd prefer to contact us by telephone, you can reach our UK headquarters on +44 (0)1638 781 709 or our US headquarters on 502-593-0726.