4chems.com - Managed IUCLID, CHESAR & QSAR Toolbox hosting in the EU cloud.

Run IUCLID, CHESAR, QSAR Toolbox and IIP in a ready-to-use EU cloud — no installation, no maintenance, always on the latest ECHA release.

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4chems.com

One platform for your whole regulatory toolchain.

Run your chemical compliance tools securely in the cloud. Always up-to-date, lightning-fast, and ready for your team — wherever they are. See solutions for your industry — from REACH registration to biocides, plant protection, and regulatory consultants.

  • Zero Installation - start working instantly, no server setup, no software updates, no downtime.
  • Always Current - Preconfigured for EU REACH, CLP, and OECD standards — reduce compliance risks.
  • High Performance - Optimized cloud hosting for fast data processing and report generation.
  • Secure by Design - GDPR-compliant, EU-based hosting with encryption and controlled access.
  • Fully Integrated - IUCLID, CHESAR, IIP, and QSAR work seamlessly together.
Measured, not promised

What we deliver

benchmarked against self-hosted IUCLID setups
faster
48%

dossier download & export

up to
90%

fewer validation errors before submission

within
48h

updated after every ECHA release

under
3h

first response on support tickets

Where dossiers go wrong

The four things that derail a submission — and how we stop them

Each one is a common failure in self-hosted setups, paired with what we do to prevent it.

Large dossiers

Dossiers can run to dozens of gigabytes — especially for biocides and plant-protection products. Ordinary hosting slows down or crashes during upload and processing.

Fast, reliable hosting of IUCLID, CHESAR, QSAR Toolbox and IIP in their native interfaces. Heavy dossiers — e.g. 21 GB — load in hours, not days.

Data Migration

When ECHA publishes a new IUCLID release, hosting providers often lag a version behind, migrations break data, and you end up working in an outdated format.

Updates you never notice: applied from 48h after each release, usually over a weekend, with no migration pain and never a year behind ECHA.

Hidden Errors Before Submission

IUCLID doesn't highlight all system errors. They are only found by regulators when the dossier is returned for rework.

The IUCLID AI-Assistant Observer surfaces hidden errors before you submit, not after a dossier comes back. Less hunting, fewer last-minute fixes, fewer returns.

Seamless Submission to Regulators

Manual .i6z export and upload to REACH-IT is time-consuming and risks human error at the most crucial stage.

System-to-System Submission: 4chems automatically deploys your dossiers to REACH-IT via direct API integration. You don't waste a single minute.

Common questions

Frequently asked questions

Have a different question and can't find the answer you're looking for? Reach out to our support team by sending us an email.

Who owns the data hosted in your solution?
At 4chems.com, our customers always retain full ownership of their data. We act solely as a data processor under GDPR, while the customer remains the data controller. All information — including IUCLID datasets, CHESAR assessments and QSAR models — belongs entirely to the customer. Upon request or contract termination, customers can export or permanently delete all their data.
Is 4chems.com GDPR compliant?
Yes — the entire 4chems.com platform is fully GDPR compliant. We implement strict data protection, access control, and transparency measures in accordance with the EU General Data Protection Regulation (Regulation (EU) 2016/679).
Can I migrate my existing self-hosted IUCLID to 4chems.com?
Yes — we provide full migration support for self-hosted IUCLID installations. Our team handles the complete migration process including data export from your on-premise instance, validation, and import into your managed cloud environment. We ensure zero data loss and minimal downtime.
How does 4chems.com compare to ECHA's own IUCLID Cloud?
While ECHA provides a basic IUCLID Cloud service, 4chems.com offers a fully managed, enterprise-grade hosting solution with key advantages: dedicated environments with guaranteed performance, full CHESAR and QSAR Toolbox integration, professional support with fast response times, automated backups, and ISO 27001-certified EU data centers.
Do I need to install anything to use IUCLID, CHESAR, or QSAR Toolbox?
No — all tools are accessible directly through your web browser. There is no software to install, no Java dependencies to manage, and no server infrastructure to maintain. Simply log in and start working.
All questions
Insights

Latest regulatory insights

Practical guides on IUCLID, CHESAR, REACH, CLP, and BPR from the 4chems team.

View all insights
Oliver Philippsen

Oliver helps regulatory and IT teams move IUCLID, CHESAR and the QSAR Toolbox to secure, managed cloud hosting.

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