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Head-to-head · Chemical Software

IUCLID vs ProMax

  • Updated Sep 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score IUCLID #3 in Chemical Software 7.7/10 Free plan Free plan✓ 1 of 5 features Visit IUCLID
ProMax #6 in Chemical Software 6.9/10 Pricing on request ✓ 0 of 5 features Visit ProMax

IUCLID leads on 2 checks, ProMax on 0, and 0 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreIUCLID · 7.7/10
  • Free planonly IUCLID
  • Most featuresIUCLID · 1 of 5

IUCLID scores higher on our rubric for chemical software: 7.7 against 6.9 out of 10; our editors rank them #3 and #6.

IUCLID offers free plan; ProMax doesn't publish it. IUCLID offers regulatory compliance; ProMax doesn't publish it.

IUCLID is the better fit for teams preparing chemical-substance regulatory dossiers. ProMax is the better fit for gas-processing and acid-gas simulation teams.

  • IUCLID fits best

    Teams preparing chemical-substance regulatory dossiers

  • ProMax fits best

    Gas-processing and acid-gas simulation teams

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.

Side by side

Feature IUCLID 7.7/10 Visit ↗ ProMax 6.9/10 Visit ↗
At a glance
Editor score 7.7 6.9
Ranking #3 in Chemical Software #6 in Chemical Software
Best for Teams preparing chemical-substance regulatory dossiers Gas-processing and acid-gas simulation teams
Pricing model Free Paid
Starting price Not published Not published
Free plan ✓ (best) Not published
Free trial — —
Deployment Cloud, Self-hosted Desktop
Platforms Web, Windows, macOS, Linux Windows
Built for Small business, Mid-market, Enterprise Mid-market, Enterprise
Features IUCLID 1/5 · ProMax 0/5
SDS management Not published Not published
Chemical inventory Not published Not published
Formulation management Not published Not published
Regulatory compliance ✓ (best) Not published
Mobile access Not published Not published
Specs
Deployment Both Not published
Our review
Pros
  • Free software for recording and maintaining substance data
  • Supports dossier preparation, online validation and ECHA submissions
  • Available through cloud, desktop and server installations
  • Models acid-gas removal with amine solvents and reaction kinetics.
  • Connects models to PI, OPC-HDA, ODBC databases, and Excel.
  • Combines optimization with pipeline, corrosion, and emissions tools.
Cons
  • Focused on chemical-substance data and regulatory dossiers
  • ECHA submissions use supported ECHA services
  • Its core purpose is not process simulation
  • Runs as a Windows desktop product, limiting platform options.
  • Uses contact-sales pricing rather than published plan tiers.
  • Its focus is process simulation, not chemical inventory or SDS management.
Our verdict

IUCLID is software for recording, storing, maintaining and exchanging data on chemical substances, including information about their intrinsic and hazardous properties. Developed by the European Chemicals Agency (ECHA) and the Organisation…

Read the review →

ProMax is process simulation software from Bryan Research & Engineering for engineers in oil and gas, refining, treating, and related process industries. It is particularly suited to gas-processing teams working on acid-gas removal and…

Read the review →
  1. IUCLIDChemical Software 7.7Free plan
  2. ProMaxChemical Software 6.9Pricing on request

Strengths and trade-offs

  • IUCLID — where it wins

    • Free software for recording and maintaining substance data
    • Supports dossier preparation, online validation and ECHA submissions
    • Available through cloud, desktop and server installations

    Where it doesn't

    • Focused on chemical-substance data and regulatory dossiers
    • ECHA submissions use supported ECHA services
    • Its core purpose is not process simulation

  • ProMax — where it wins

    • Models acid-gas removal with amine solvents and reaction kinetics.
    • Connects models to PI, OPC-HDA, ODBC databases, and Excel.
    • Combines optimization with pipeline, corrosion, and emissions tools.

    Where it doesn't

    • Runs as a Windows desktop product, limiting platform options.
    • Uses contact-sales pricing rather than published plan tiers.
    • Its focus is process simulation, not chemical inventory or SDS management.
  • IUCLID7.7/10 · Free plan

    Free dossier software for chemical-substance data and regulatory preparation.

    Visit IUCLIDFull verdict →
  • ProMax6.9/10 · Pricing on request

    A focused Windows simulator for gas treating, plant models, and process optimization.

    Visit ProMaxFull verdict →

More comparisons

All chemical software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update