The Switzerland State Secretariat for Economic Affairs (SECO) has posted a December 21, 2010, guidance document for preparing safety data sheets (SDS) for synthetic nanomaterials. Safety Data Sheet (SDS): Guidelines for Synthetic Nanomaterials is intended to demonstrate the information necessary to ensure the safe handling of nano-objects and products that contain nano-objects; offer assistance on how the relevant information can be identified and in which form and which place they are to be listed in the SDSs; and contribute to making employees of companies that produce or process synthetic nano-objects aware of the particular properties of these materials. The Guidelines, which are limited to “specifically manufactured (i.e. synthetic) nano-objects which are nano-sized in two or three dimensions (i.e. nano-fibres or nano-particles),” include two fictitious examples of SDSs for synthetic nanomaterials. The Guidelines supplement the Federal Office of Public Health (FOPH) document entitled The Safety Data Sheet in Switzerland.