5df75927_r_Batch_7___Environment_Canada__Response
[Comment] Data gaps and uncertainty in isophorone exposure should result in applying a precautionary approach to the isophorone assessment and consider the substance “toxic” under Section 64(c) of CEPA. [Response] 
Data gaps and uncertainties have been considered when concluding that isophorone does not meet the criteria of section 64 of CEPA, 1999.
Summary of Public Comments received on the Challenge substance Isophorone (CAS 78-59-1) Draft Screening Assessment Report for Batch 7 - Environment Canada
Response