1. Introduction

The Chemicals Management Plan, launched by the Government of Canada on December 8, 2006, is part of the government's comprehensive environmental agenda. The plan aims to take immediate action to regulate chemicals that are harmful to human health or the environment, and to carry out further work on the substances identified.

A key element in the Chemicals Management Plan is the initiative known as the "Challenge". Under the Challenge, approximately 200 substances identified as high priorities for action have been divided up into twelve smaller groups of substances, or batches, which are being addressed sequentially.

The substance 2,4,6-TTBP¹, which is only used in Canada as a fuel additive, was included in Batch 2 of the Challenge.

A next step under the Chemicals Management Plan will be the assessment and potential risk management of the medium priorities, for which priority setting exercises are currently being developed.

1 2,4,6-tri-tert-butylphenol, Chemical Abstracts Service Registry Number (CAS RN) 732-26-3, also known as Phenol, 2,4,6-tris(1,1-dimethylethyl)-