Search for every hazardous substance and new organism application decided under Part 5 of the HSNO Act. Tip: In the Search field, tap the space bar, then search, to see a complete list of decisions. Important note: search the Approved Hazardous Substances with Controls database to find the current controls on a hazardous substance. Due to legislative change, any decision document for a substance approved prior to 1 December 2017 no longer provides a complete and accurate record of the applicable controls.