Methylenedicyclohexyl Diisocyanate (H12MDI) REACH Consortium

The Methylenedicyclohexyl Diisocyanate (H12MDI) REACH consortium has been created to help its members prepare for REACH.

Consortium description

The manufacturers of Methylenedicyclohexyl Diisocyanate (H12MDI) have joined efforts for their REACH compliance activities and have launched in January 2009 the Methylenedicyclohexyl Diisocyanate REACH consortium.

Substance covered

The following substance is covered by the Methylenedicyclohexyl Diisocyanate REACH consortium and has been registered under the REACH regulation:

Constituents EC Number CAS Number

4,4'-methylenedi(cyclohexyl isocyanate); dicyclohexylmethane-4,4'-di-isocyanate 




The Methylenedicyclohexyl Diisocyanate 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 and SIEF agreement / Offer for registration

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


Cantersteen 47 
B-1000 Brussels