Decision on application for authorisation under UK REACH.


UK REACH authorisation for Lonza Biologics Plc 30 May 2023

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Decision on an application for authorisation under UK REACH.

Substance name

4-(1,1,3,3-tetramethylbutyl)phenol, ethoxylated (4-tert-OPnEO).

Authorised use

Use of 4-tert-OPnEO for virus inactivation via solvent/detergent treatment in the manufacture of recombinant medicinal active pharmaceutical ingredients from mammalian cell cultures.

Holder of the authorisation and authorisation number

Lonza Biologics Plc, (UKREACH/23/01/0).

Date of decision

30 May 2023

Published 19 June 2023