CSA Preface This is the first edition of CAN/CSA-Z13329, Nanomaterials - Preparation of safety data sheets (SDSs), which is an adoption, with Canadian deviations, of ISO (International Organization for Standardization) Technical Report 13329 (first edition, 2012-12-01), Nanomaterials - Preparation of Material Safety Data Sheet (MSDS). This Standard contains revisions and additional guidance to reflect Canadian practices and safety considerations. The title of this Standard has been changed to better reflect the subject matter. This Standard is one of a series of Standards on nanotechnologies resulting from international and Canadian contributions to the continued activity of ISO/TC 229, the ISO Technical Committee on nanotechnologies. The preparation of SDSs is governed in Canada by the Hazardous Products Act, the Hazardous Materials Information Review Act, and occupational health and safety legislation in each federal, provincial, and territorial jurisdiction. The guidance provided by CAN/CSA-Z13329 is intended only as a supplement to the requirements of those laws. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope This Technical Report provides guidance on the development of content for, and consistency in, the communication of information on safety, health and environmental matters in safety data sheets (SDS) for substances classified as manufactured nanomaterials and for chemical products containing manufactured nanomaterials. It provides supplemental guidance to ISO 11014:2009[1] on the preparation of SDSs generally, addressing the preparation of an SDS for both manufactured nanomaterials with materials and mixtures containing manufactured nanomaterials.