C&L Inventory 2026: notified classifications in DOHSBase brought up to date

In brief: DOHSBase adds the classifications companies notify to ECHA to the harmonised classification, but only when enough companies agree, under three fixed tests. With this release DOHSBase uses the complete C&L Inventory as of 11 September 2026. The database grows by more than 40%. About 1 in 20 existing substances changes hazard band, mostly to a stricter one. A smaller group moves the other way. Harmonised CMR classifications are not affected.

How DOHSBase uses notified classifications

Under CLP, every company that places a substance on the EU market notifies ECHA how it classifies that substance. ECHA collects these notifications in the C&L Inventory. DOHSBase uses the classifications notified by companies to complete the picture alongside the harmonised classification.

The harmonised classification (CLP Annex VI) is always applied as the legal baseline. On top of that, DOHSBase adds a hazard that companies notify when enough of them agree, under any of three tests:

1. more than 1% of notifications, at least 10 notifications of that hazard, and more than 33 notifications in total for the substance;
2. more than a third of notifications, and at least 10 of them;
3. at least half of notifications, and at least 3 of them.

This way a widely shared classification counts, while a single deviating notification does not. Notifications can raise a hazard band, never lower it below what the harmonised classification requires. The hazard band sets the kick-off value for substances without a legal limit value.

What this update changes

ECHA provided the complete C&L Inventory as of 11 September 2026, including the number of notifications behind each classification. Everything that changed since our previous update comes in at once. The figures below are for the Netherlands profile:

• More substances. The database grows by more than 40%. About 9 in 10 of the new substances were notified by a single company. We list them so you can see that a notification exists, even where one notification is too little to base a hazard assessment on.
• About 1 in 20 existing substances changes hazard band, mostly to a stricter one. About 12,300 substances move to a stricter band, about 13,000 gain a kick-off value and about 450 gain a notified CMR hazard. This makes the assessment more cautious.
• A smaller group moves the other way. About 1,600 substances move to a less strict band, about 1,000 lose a kick-off value, and about 450 no longer carry a notified CMR hazard, because it no longer passes the three tests in ECHA’s current data. Harmonised CMR classifications are not affected. For the substances you rely on, compare the current hazard band and kick-off value with those in your assessment.
• Some substances have a new identifier, usually a real CAS number replacing a provisional EC-based one. The EC number stays the same, so if a substance seems to be missing, search by its EC number. Less than 1% of substances have been removed, mostly because none of their notifications at ECHA is active any more.

The classification page of each substance shows which notifications it is based on. Questions are welcome at info@dohsbase.nl.