HSC Chemistry

Outotec's Chemical Reaction and Equilibrium Software HSC Chemistry is the world's favorite thermochemical software with a versatile flowsheet simulation module. HSC is designed for various kinds of chemical reactions and equilibria calculations as well as process simulation.


HSC software makes conventional thermodynamic calculations fast and easy to carry out with personal computers. Therefore HSC has a wide range of applications in scientific education, industry and research. Thermochemical calculations are useful, for example, when developing new chemical processes and improving old ones. HSC Chemistry is also a useful tool for universities and schools in chemical practicals and studies.

Traditionally, thermodynamic calculations based on experimental or assessed data have utilized stability functions in various thermodynamic data books and papers in scientific journals. The difficult searching stage and complicated calculations, as well as inconsistencies arising from different selections of standard and reference states, have made this calculation procedure quite time-consuming.

HSC Chemistry offers powerful calculation methods for studying the effects of different variables on a chemical system at equilibrium. For example, if the user gives the raw materials, amounts and other conditions of almost any chemical process, the program will give the amounts of the product as a result. HSC also makes heat and material balance calculations of different processes much more easily than any manual method. The Eh-pH-diagrams option also offers a very fast way of studying the dissolution and corrosion behavior of different materials.

Of course, HSC cannot solve all chemical problems, because it does not take into account the kinetics (rates) of the chemical reactions. However, in many cases it is a very inexpensive and useful tool which helps to find the optimal reaction conditions and yields for experimental investigations without expensive trial-and-error chemistry.

About the software

The name of the program is based on the fact that calculation modules automatically utilize the same extensive thermochemical database which contains enthalpy (H) , entropy (S) and heat capacity (Cp) data for more than 28 000 chemical species. This database is equivalent to more than twenty thick data books.

HSC Main Menu

The current HSC version 9.0 contains 24 calculation modules:

1. Sim – Process simulation
2. LCA Evaluation
3. Mass Balance
4. Reaction Equations
5. Heat and Material Balances
6. Heat Loss Calculator
7. Equilibrium Calculations
8. Exergy Balance
9. Eh-pH Diagrams – Pourbaix
10. H, S, Cp and Ellingham Diagrams
11. Tpp Diagrams – Stability diagrams
12. Lpp Diagrams – Stability diagrams
13. Water – Steam tables, etc.
14. H, S, Cp Estimates
15. Benson Estimation
16. Species Converter
17. Periodic Chart – Elements
18. Measure Units
19. HSC AddIn Functions
20. Aqua
21. Geo – Mineralogical calculations
22. Map – GPS material stock (HSC7)
23. Fit – Numerical Data fit (HSC7)
24. Data – Statistical analysis (HSC7)

HSC also contains:

1. H, S and Cp Thermochemical Database with more than 28 000 species  
2. Water Steam/Fluid Database
3. Heat Conduction Database
4. Heat Convection Database
5. Surface Radiation Database
6. Gas Radiation Calculator
7. Particle Radiation Calculator
8. Elements Database
9. Measure Units Database
10. Minerals Database with 13 329 minerals
11. Aqueous Solution Density Database
12. The Pitzer parameter database

The price of HSC Chemistry does not include technical or chemical support or training due to limited support resources and the low price of the software. However, free support is available from hsc.support(at)outotec.com for example for installation.

Technical support

HSC users can also receive technical support for certain chemical issues. The price and delivery time of the support depends on the case. Please specify the following:

  • Chemical problem,
  • The chemical species and phases, 
  • The HSC module which you have used.

Outotec will send you a quotation on this basis.


HSC Training courses help you to get more out of your HSC software.

Public HSC training courses are available annually in different countries depending on demand and HSC user feedback. All participants must bring their own laptop. The latest HSC version with a temporary license for 14 days will be installed in these laptops if needed.

On-Site HSC training courses can be arranged for companies and universities. These private courses make it easier to focus on such confidential issues and process examples that are important for your organization. Course content may focus on hydro, pyro, or mineral processing applications depending on your requirements and lecturer expertise.

We are grateful for all comments, feedback, chemical examples and bug reports (by email, fax, etc.) to hsc.support(at)outotec.com, because these will help the future development work of the software.

Perth (February 2017)
HSC 9 Training Perth 2017
HSC 9 Booking Perth 2017

Melbourne (February 2017)
HSC 9 Training Melbourne 2017
HSC 9 Booking Melbourne 2017

Operating system:

Windows Vista, Windows 7, Windows 8, Windows 10 (32- and 64 bit)

Disk space: about 1,50 GB


The system requirements for HSC are very typical of all Windows programs. Computers that are able to run the required operating system can run HSC Chemistry.

HSC installation

You can purchase HSC Chemistry  from the HSC Chemistry Webshop, or you can use the order forms found below. After purchasing your license, please visit the Download page for the software setup file.

You can order HSC Chemistry easily by email. Please select your choice from the below list. You can also order from your local reseller. See contact information from the List of Resellers.

The price of HSC is extremely low compared to many other simulation software packages, especially considering that HSC Chemistry contains 24 calculation modules and 12 databases. 

Type of license User type Price and order form
Company license For commercial customers HSC9 order form (companies)
Academic license For universities and schools HSC9 order form (universities)
Company/University Site license Entitles the licensee to install HSC to all the computers within the same Company, Site, University or Department. However, the activation is available up to the given number of computers. This number may easily be increased later on, if necessary. A "Site" is defined as the physical address (single location) of the licensee. HSC9 order form

Note: We reserve the right to change our product's prices and specifications at any time without further notice.

Payment and Wire Transfer Information

You may pay by credit card, cheque or using wire transfer. An invoice or receipt of your payment will be sent together with the software package.

Terms of payment 30 days NET

Please pay to:

Outotec (Finland) Oy, VAT FI15386292
Bank: Nordea Bank Finland Plc
Account: 157130-16999
IBAN: FI82 1571 3000 0169 99

Outotec (Finland) Oy
Information Center
P.O. Box 69
FIN - 28101 PORI
Tel: +358 - 20 - 529 211
Fax: +358 - 20 - 529 3201
E-mail: hsc(at)outotec.com

COPYRIGHT HSC Chemistry and all documentation are copyright protected with all rights reserved by Outotec (Finland) Oy. All parts of this software are licensed only to the legal end-user, the registered licensee, and can be used for his/her own internal use. Outotec makes no warranties, express or implied, in manuals, training material or in other parts of HSC Chemistry. See HSC Licence Agreement for the details.

HSC Chemistry® End User License Agreement (EULA)


You can see the HSC Chemistry End User License Agreement (EULA) here.


Xperential Sciencific http://www.xperentialscientific.com.au


Metalquim Limitada http://www.metalquim.cl/


Outotec (Finland) Oy http://www.outotec.com/hsc


ChemCAD http://www.chemcad.fr/


Digital Data Management Corporation http://www.ddmcorp.com/

Korea Republic

Phil Science, Inc. http://www.philscience.com/

SigmaSoft http://www.sigmasw.co.kr/

New Zealand

Xperential Sciencific http://www.xperentialscientific.com.au

South Africa

Chempute Software cc http://www.chempute.com/

United States

Chemistry Software Ltd http://www.chemistry-software.com/


Chemistry Software Ltd http://www.chemistry-software.com/

HSC Chemistry has been applied by users to an extremely wide range of problems.

HSC licence holders by country

HSC Chemistry Literature References

HSC Chemistry 9 contains 24 calculation modules which are connected to the 12 databases as appropriate. Most calculation modules operate like independent programs which may have data links with each other. All the calculation modules have their own user interface and manual. Quite often HSC users use only a few (1 - 2) of the calculation modules. In this case they do not need to read all the manuals but only the relevant ones.

HSC Main Menu

The databases are extremely important parts of the HSC software. They make it possible to carry out many types of thermochemical, heat transfer and simulation calculations easily. HSC 9 contains 12 databases. The largest and most important one is the H, S and Cp database which contains more than 28 000 species. However, the other databases may also contain vital information depending on the purpose.

HSC Main Menu

Browse the pages on the left hand side menu to get more detailed information of the HSC database family.

HSC is one of the first scientific software packages with versatile chemical, thermodynamic and mineral processing features. Timo Talonen created the first HSC module in 1974 to calculate equilibrium compositions in the Outokumpu Oyj sulfur plant gas line. Dr. Antti Roine started HSC digital database development at the Helsinki University of Technology in 1979. Since then, he has managed the HSC development. Development of HSC mineral processing modules was started by prof. Pertti Lamberg in 1990.

The HSC software development was started because there was not such software packages available in 1970s and 1980s. Originally, HSC was developed as an internal tool for Outokumpu Oyj to improve chemical process R&D efficiency. Later on, in 1987, delivery to other companies began.

The development of software and databases has been done in co-operation with several universities including the Helsinki University of Technology (Aalto), Åbo Akademi, Petrozavodsk State University, Luleå University of Technology, University of Kentucky, Montana Tech, the University of Missouri-Rolla, the University of Turku, the University of Jyväskylä, Tallinn Technical University, the Technical University of Lappeenranta, the University of Oulu and the University of Joensuu.

Outokumpu Oyj founded a new company Outotec Oyj in 2006, based on Outokumpu Oyj technology business activities and IPR. The ownership of HSC Chemistry was also transferred to Outotec Oyj.

Year Version Modules Species Databases Operating System Compiler Comment / New Modules
1974 HSC 0.1 1   0   Fortran First Equilibrium module Gibbs
1979 HSC 0.2 0   1 Unix HP Basic H, S, and Cp Database
1980 HSC 0.3 1   1 Unix HP Basic Routine for activity coefficient calculations
1981 HSC 0.4 2   1 Unix HP Basic Reaction Equation module 
1983 HSC 0.5 2   1 Unix HP Basic Heat Balance module
1986 HSC 0.6 2 1000 1 IBM DOS 3 QB 1  
1987 HSC 0.7 2 2400 1 IBM DOS 3 QB 2  
1987 HSC 0.7 3 2400 1 IBM DOS 3 QB 3 Delivery to other companies started
1989 HSC 0.8 4 4600 1 IBM DOS 4 QB 4.5 Gibbs and MW modules integrated to HSC
1992 HSC 1.0 7 5600 1 Windows 3.1 VB2/C++ Cell, PSD and EpH modules added
1993 HSC 1.1 7 5600 1 Windows 3.1 VB3/C++  
1994 HSC 2.0 7 7600 1 Windows 3.1 VB3/C++  
1997 HSC 3.0 7 11000 1 Windows 95, NT 4 VB5/C++  
1999 HSC 4.0 13 15000 2 Windows 98, NT 4 VB6/C++ Diagrams, Tpp, Conversions, Periodic Chart, Units
2002 HSC 5.0 15 17000 5 Windows XP, NT 4 VB6/C++ HeatLoss, Water, Excel Add-Ins, Help
2006 HSC 6.0 19 20000 11 Windows XP, NT 4 VB6/C++ New Sim, Geo, Data, and Map modules
2009 HSC 7.0 22 25000 12 Windows XP, Vista VB6/C++ New Aqua module, improved Sim
2011 HSC 7.1 22 25000 12 Windows XP, Vista VB6/C++ More robust modules
2014 HSC 8.0 24 28000 12 Windows 7,8 .NET/C++ All modules rewritten to Windows 7 and 8

2015 HSC 8.1 24 28000 12 Windows 7,8 .NET/C++ More robust modules
2015 HSC 8.2 24 28000 12 Windows 7,8 .NET/C++ More robust modules
2015 HSC 9.0 24 28000 12 Windows 7,8,10 .NET/C++ Subscription, new features

Read more

HSC user forum
HSC Chemistry 8 brochure

HSC version history

What's New in HSC9?

What's New in HSC8?

What's New in HSC7.1?

What's New in HSC7?

What's New in HSC6.1?

What's New in HSC6?

What's New in HSC5?

HSC Version Summary

Contact information


Outotec (Finland) Oy
Information Center
P.O. Box 69
FIN - 28101 PORI
Tel: +358 - 20 - 529 211
Fax: +358 - 20 - 529 3201

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