HDI Trimer MEKO REACH consortium

The manufacturers of oligomerization product of 1,6-diisocyanatohexane (HDI Trimer MEKO) have joined efforts for their REACH compliance activities and have launched in January 2009 the oligomerization product of 1,6-diisocyanatohexane REACH consortium.

Substance covered

Substance name NLP Number EC Number CAS Number

oligomerization product of 1,6-diisocyanatohexane, 
blocked with 2-butanone oxime



85940-94-9 or 


The oligomerization product of 1,6-diisocyanatohexane REACH consortium structure includes a Steering and Technical Committee and the consortium secretariat managed by ReachCentrum. The consortium is open to manufacturers, importers, only representatives as defined in the REACH Regulation of the substance on its own, in preparations or in articles and that are subject to the registration requirements pursuant to the REACH Regulation, or Affiliates thereof. Downstream users and other data holders are invited to play an active role in the work of the consortium.

Relevant links

Letter of Access

The Consortium offers Letters of Access (LoA) for registration dossiers to all interested parties who have an obligation to register the substance. The LoA prices and the LoAs are available at


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