Decision

UK REACH authorisation for PPG Industries (UK) Ltd, 12 June 2025

Decision on an application for authorisation (review report) under UK REACH.

• From: Department for Environment, Food & Rural Affairs
• Published: 16 September 2025

Documents

UK REACH authorisation for PPG Industries (UK) Ltd, 12 June 2025

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Details

Decision on an application for authorisation (review report) under UK REACH.

Substance name  

4-(1,1,3,3-Tetramethylbutyl) phenol, ethoxylated (4-tert-OPnEO) 

Authorised uses  

Use 1: Formulation of a hardener component containing 4-tert-OPnEO within Aerospace two-part polysulfide sealants for use by Airbus and their associated supply chains. 

Use 2: Mixing, by Airbus and their associated supply chains, including the Authorisation Holder, of base polysulfide sealant components with 4-tert-OPnEO-containing hardener, resulting in mixtures containing < 0.1% w/w of 4-tert-OPnEO for Aerospace uses. 

Holder of the authorisation and authorisation number  

PPG Industries (UK) Ltd (UKREACH/25/15/00)  

PPG Industries (UK) Ltd (UKREACH/25/15/01) 

Date of decision  

12 June 2025 

Published 16 September 2025