Caprolactam REACH Consortium

The manufacturers of Caprolactam have joined efforts for their REACH compliance activities and launched in 2008 the Caprolactam REACH consortium.

The Caprolactam REACH Consortium manages the EU-REACH registration of the substances Caprolactam and Bis(hydroxylammonium) sulphate. The project management and secretariat of the consortium is handled by ReachCentrum.

Substances covered

The following substances have been successfully registered under the REACH legislation by the Caprolactam REACH consortium:

Substance name EC Number CAS Number ECHA




link to ECHA's dissemination page 

Bis(hydroxylammonium) sulphate 



link to ECHA's dissemination page 

Further information on the Substance Identity Profile (SIP), Classification, Labeling & Packaging (CLP) proposal, uses covered by the Consortium for the managed substances and the SIEF Agreement, can be provided upon request by ReachCentrum.


The Caprolactam REACH consortium is open to manufacturers, importers and only representatives as defined in the REACH Regulation. The consortium works on registration dossiers for all substances indicated. Operational costs are shared equally among the members. For an appropriate fee the consortium offers a Letter of Access to the registration dossiers managed. 

Downstream users and other data holders are invited to play an active role in the work of the consortium.

Letter of Access

A Letter of Access can be purchased via ReachCentrum’s LoA e-shop:


Cantersteen 47
B-1000 Brussels