REACH Training requirements for diisocyanates (restriction list)

As of September 12, 2022, we have a new restriction list in iChemistry: REACH Training requirements for diisocyanates. The list is provided as standard for all customers operating in the EU.

Diisocyanates listed in Entry 74 in Annex XVII shall not be used as substances on their own, as a constituent in other substances or in mixtures for industrial and professional use(s) after 24 August 2023, unless:

(a) the concentration of diisocyanates individually and in combination is less than 0,1 % by weight, or 

(b) the employer or self-employed ensures that industrial or professional user(s) have successfully completed training on the safe use of diisocyanates prior to the use of the substance(s) or mixture(s).


All CAS- and EC numbers listed in Entry 74 in REACH Annex XVII will generate a match against the restriction list. Besides the CAS and EC-numbers that you can find in Annex XVII Entry 74, our EHS consultants have supplemented the list with some additional diisocyanates covered by the requirements.

If you see that you have products inventoried in iChemistry that match the list for these training requirements, you can start by examining which substance is causing the matching and in what concentration that substance is in the product.

To do this, go to the product's iSafe/Product infomation> Restriction and Prohibition Lists and see the substance name under Reason

Then go to Show composition (or section 3 in the SDS) to see the concentration level for that substance. This way you see if the substance that causes the matching is present in high concentrations in your chemical product or not.

The education requirement in the REACH restriction covers diisocyanates (those found in entry 74 Annex XVII) where the concentration is above 0.1% by weight regardless of classification. If the substance that causes the match is below 0.1% by weight, you can therefore exclude the product from the restricted list.

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