EU REACH Registration Enquiry System

Substance identity
Administrative data
System introduction

The REACH Registration Enquiry System is to help potential registrants to access the information of Letter of Access (LOA) for REACH registration. The data is collected by CIRS. It's limited for the purpose of REACH registration only.

CAS number is preferred when you fill in the substance identity form. In addition, registration type, tonnage band and enterprise size shall be chosen.

According to REGULATION (EU) 2016/9 (Data sharing Regulation), since the LOA cost is shared by all actual registrants, we cannot guarantee that the information of LOA cost is entirely accurate. If you have any other questions, please send email to

Please note that some of the information on registered substances may belong to third parties. The use of such information may therefore require the prior permission of the third party owners.