# Tools Programs developed by the EgiChem group

**Disclaimer**: All calculators on this website are provided in good faith and are accurate to the best of our knowledge. However, EgiChem does not make any guarantees about this information. Any action you take upon the information you find here, is strictly your responsibility. Feel free to contact us if you have any questions.

## Property estimation

Online Calculator

### PC-SAFT Equation of State

Calculate properties of pure components and binary mixtures using the PC-SAFT equation of state.

PC-SAFT EoSOnline Calculator

### Joback method

Estimation of pure component physical properties using the Joback Group Contribution method.

Joback method## Diffusion coefficients

Online Calculator

### Diffusion coefficients - binary gases

Estimated using the empirical correlation of Wilke and Lee (1955) for binary gas systems at low pressure.

Gas DiffusivitiesOnline Calculator

### Diffusion coefficients - polar/nonpolar solvents

Machine Learning models for the prediction of diffusivities in polar (except water) and nonpolar (except supercritical carbon dioxide) solvents.

ML polar/nonpolarOnline Calculator

### Diffusion coefficients - Supercritical CO_{2}

Machine Learning models for the prediction of diffusivities in supercritical carbon dioxide.

ML SC-CO_{2}

Online Calculator

### Diffusion coefficients - Rice and Gray model

Diffusion coefficients of a solute in a solvent calculated using the Rice and Gray model.

Rice and Gray modelOnline Calculator

### Diffusion coefficients - Wilke-Chang

Diffusion coefficients of a solute in a solvent calculated using the Wilke-Chang equation.

Wilke-Chang## Supercritical fluids

Online Calculator

### SC-CO_{2} and SC-CO_{2}/cossolvent properties

Thermodynamic properties of supercritical carbon dioxide and cossolvent mixtures calculated using the PC-SAFT equation of state.

SC-CO_{2}Properties

## Psychrometrics

Online Calculator

### Psychrometrics

Calculate the thermodynamic properties of air and simulate drying/ventilation processes. Visualize data in an interactive Psychrometric Chart.

Psychrometric Calculator Drying/Ventilation SimulatorOnline Calculator

### Air properties

Correlations to estimate the thermodynamic and transport properties of dry air at atmospheric pressure, for the range 200 - 400 K.

Air properties calculator## Adsorption

Online Calculator

### Adsorption isotherm fitting

Fits well known adsorption isotherm models (e.g. Linear, Langmuir, Freundlich) to experimental data.

Isotherm fitting## Others

Online Calculator

### Unit conversion

Covert between units of time, length, area, volume, mass, temperature, pressure, energy, speed, volumetric flow, density, and viscosity.

Unit conversionOnline Calculator

### Utilities

A collection of useful constants and functions used in chemical engineering.

UtilitiesMicrosoft Excel

### Diffusivities calculation (universal)

Universal model for accurate calculation of binary diffusivities of solutes inﬁnitely diluted in gas, liquid and supercritical solvents. Based on a Lennard-Jones model, and contains two parameters: molecular diameter of the solvent and a diffusion activation energy. The model is universal since it is applicable to polar, weakly polar, and non-polar solutes and/or solvents, over wide ranges of temperature and density.

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