543 chemicals in one alphabetical list, or a mixture of up to 12: Z, density, cp with pressure correction, viscosity, conductivity, heating values and hazard data at any T and P.
USD 49 one-time purchase
Download the sample report (PDF)
Or get the Physical Properties Kit — USD 89
Need it once? Use it online: check your data free, unlock results from USD 9 for 3 runs.
What it does
543 chemicals, A to Z
Chosen for fertilizer, oil and gas and chemical plants, in one alphabetical list for every industry.
Mixtures of up to 12
Presets for natural gas, air, flue gas and synthesis gases, or your own analysis in mole % or mass %.
Full real-gas properties
Z, density, cp and cv with the pressure correction, γ, speed of sound, Joule–Thomson coefficient, viscosity and thermal conductivity.
Heating values
HHV and LHV by mass and by volume, Wobbe index, stoichiometric air and flammability limits.
Hazard data
NFPA 704 ratings, GHS statements, flash point and autoignition temperature.
Every value traceable
Each value shows its source and a data class (A to D), so you know how far to trust it.
Built for engineers
- Open, citable data — reference equations of state, NIST, IUPAC and other published sources; no values copied from handbooks.
- Data class on every chemical — A (reference) to D (indicative), shown next to the result.
- Published methods — Peng–Robinson, Chung, Wilke, Wagner and Le Chatelier, each cited in the Guide tab.
- Built-in checks — warns when the gas would condense, near the critical point and outside each chemical's data range.
For engineering estimates; verify against site data. Code-based methods are aligned with the publicly documented procedure; they are not a licensed reproduction or a certification.
Preview the workbook
Real pages from the workbook with its built-in example loaded (example data, not a measured plant). Choose a page below, or select the large image to enlarge it.
A worked case
The case: pure methane at 25 °C and 1.01325 bar a (any of 543 chemicals, or a mixture of up to 12, works the same way). The workbook gives: Z = 0.99775, density 0.6572 kg/m³, cp 2.233 kJ/kg·K, γ = 1.306, speed of sound 448 m/s, viscosity 11.19 µPa·s, conductivity 0.0343 W/m·K, HHV 55.52 MJ/kg (39.85 MJ/Nm³, 1,014 Btu/scf), Wobbe index 53.55 MJ/Nm³ and flammable limits 4.4–17.0 %, plus a table and charts of density and cp from 0 to 400 °C for the data sheet.
Specification and checks
| Format | Excel workbook (.xlsx), no macros |
| Version | v1.0 |
| Works in | Excel 2010 or later, Windows and Mac |
| Units | SI, US and British, mixed freely |
| Includes | Guide tab with method and references, calculator, print-ready report |
| Checked against | 36 states against reference equations of state: Z within 0.1 % near 1 atm; heating values within 0.1 % of NIST. See the verification record |
Free calculator, online tool or Excel tool?
| Free calculator | Online tool | Excel tool | |
|---|---|---|---|
| What it does | Density and compressibility of 21 gases and mixtures at any pressure, with Nm³/h, kg/h and MMSCFD. | The full Excel tool, run in your browser | 543 chemicals in one alphabetical list, or a mixture of up to 12: Z, density, cp with pressure correction, viscosity, conductivity, heating values and hazard data at any T and P. |
| Cost | Free, no sign-up | 3 runs for USD 9, or every online tool for USD 15 a month | USD 49 once, yours to keep |
| Input checks and findings | Basic warnings | Every input checked, with findings and recommendations | Every input checked, with findings and recommendations |
| Report for your calculation file | Print the web page | Printable results sheet | Print-ready report with your plant, tag, document number, revision and sign-off |
| Formulas | Method described on the page | Method described in the guide | Every formula visible in its cell |
| Save, edit and rerun your cases | — | Each run separately | Yes — keep and edit your own file |
| Works offline, on a plant PC | — | — | Yes — Excel 2010 or later, Windows and Mac |
Compatibility, licence and support
| File | Excel workbook (.xlsx), no macros, version v1.0; works in Excel 2010 or later on Windows and Mac. Sheets are protected against accidental edits, with an open password so you can customise. |
| Licence | Single user. A team licence (up to 5 named users) is 3 × the shop price; site licences on request — licence terms. |
| Updates | Updates to this major version are included; download them again from the link in your receipt. |
| Support | Email [email protected] with your order number — questions on the method, your inputs or your results are welcome. |
| Refunds | If the tool does not work as described, or has an error we cannot fix, email [email protected] with your order number within 14 days of purchase and we will refund you in full. Refunds are not offered for a change of mind once a file has been downloaded. Read the full refund policy. |